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Articles 159091 - 159120 of 159239
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A Classification For Forestry Literature, Faculty Of The Yale Forest School
A Classification For Forestry Literature, Faculty Of The Yale Forest School
Yale School of the Environment Bulletin Series
The following classification for forestry literature has been prepared by the Faculty of the Yale Forest School for use in its library. It is published to supply the demand for a simple and comprehensive classification that is adapted to any library system. The work was begun about one year ago and included a study of all available data on the subject. A tentative outline was submitted to prominent members of the profession from whom helpful suggestions were received.
The subject has been divided into nine parts of approximately equal importance. The secondary divisions also have been limited to nine and …
Botanical Specimens (Herbarium) By Alice Ford, 1912, Alice Ford
Botanical Specimens (Herbarium) By Alice Ford, 1912, Alice Ford
Botanical Specimen Books
This botanical specimen book (herbarium) was collected and curated by Sara Alice Ford in spring 1912 for a Botany I course taught by John M. Holzinger at the Winona Normal School in Winona, Minnesota. These plants were collected in the Witoka area. Sara Alice Ford Einhorn (1983-1992) grew up in the Witoka Area and attended Winona Normal School, graduating in 1912. She taught in the area rural schools (Boynton and Ridgeway) before marrying Clifford Einhorn. They lived in North Minneapolis before moving back to Winona in the 1940s.
Daughter of Kathryn Jeanette Einhorn Anderson who graduated from Winona Teachers' College …
A Comparative Study Of The Structure And Origin Of The Yolk Nucleus, John P. Munson
A Comparative Study Of The Structure And Origin Of The Yolk Nucleus, John P. Munson
Biology Faculty Scholarship
The question as to the comparative structure and origin of the yolk nucleus involves several other problems:
1. Is the yolk nucleus a normal element of the egg cytoplasm, or is it associated with pathological states of the egg, or is it an artefact due to reagents?
2. Is there a necessary connection between one form and another such that one can be derived from the other?
3. Is it an amorphous chemical substance or does it possess anything suggesting permanence of structure?
4. Does it arise de novo or is it a modification of something similar existing in the …
The Unexpected Occurrence Of Aleurone Colors In F2 Of A Cross Between Non-Colored Varieties Of Maize, R. A. Emerson
The Unexpected Occurrence Of Aleurone Colors In F2 Of A Cross Between Non-Colored Varieties Of Maize, R. A. Emerson
Department of Agronomy and Horticulture: Faculty Publications
Before the Mendelian methods of analysis became available, considerable wonder would doubtless have been excited by the "mysterious" appearance in F2 of one colored grain-purple or red-to every five or six white ones in case of a maize cross, both parents and F, of which had only white grains. An occurrence of this sort has recently been noted in one of my maize cultures and the F2 numbers are explained here as a trihybrid or tetrahybrid ratio. The crosses in question were made primarily for a study of size inheritance and fairly large numbers have been grown. The varieties …
A Consideration Of The Physiology And Life History Of A Parasitic Botrytis On Pepper And Lettuce, George L. Peltier
A Consideration Of The Physiology And Life History Of A Parasitic Botrytis On Pepper And Lettuce, George L. Peltier
Department of Plant Pathology: Faculty Publications
During the autumn of 1911, while gathering the peppers (Capsicum) in the vegetable plat of the Missouri Botanical Garden, the writer observed a fungus which was appearing as a parasite on the fruits. The peduncles were covered with a dark brown mass of conidia and mycelium, which so weakened the tissues that the fruit soon fell to the ground. On opening the peppers a number of large, flat, crust-like sclerotia, 1 cm. long and .5 cm. wide, were found to fill the interior. In most cases the seeds were also covered with the crust-like masses. The conidial stage …
The Present Methods Of Teaching Entomology, J. H. Comstock
The Present Methods Of Teaching Entomology, J. H. Comstock
Department of Entomology: Faculty Publications
The present methods of teaching entomology followed in the United States have been developed almost entirely by men now teaching this subject. A second generation of teachers has begun its work; but the first is still on the stage. We h3i¥e progressed far enough, however, to make it worth while for the teachers to compare methods, in order that each may profit by the experience of the others. In a conference of this kind the contribution of each to the discussion will be, naturally, at first, merely a statement of the methods evolved in our several widely separated institutions. Then …
Present Methods Of Teaching Entomology At The University Of Nebraska, Lawrence Bruner
Present Methods Of Teaching Entomology At The University Of Nebraska, Lawrence Bruner
Department of Entomology: Faculty Publications
'When our Secretary sent out his preliminary notification of this meeting and asked me to take part in a discussion of "present methods of teaching Entomology," the matter at first seemed of little importance so far, at least, as the speaker was concerned. However, after giving the subject some thought I have decided that it might be well at least to take the time and trouble to attempt to explain briefly a few of the methods by which the student in Nebraska is enabled to absorb some entomological information. In order to do this with an unbiased feeling it might …
Discussion And Correspondence Coupling Vs. Random Segregation, R. A. Emerson
Discussion And Correspondence Coupling Vs. Random Segregation, R. A. Emerson
Department of Agronomy and Horticulture: Faculty Publications
To the editor of science: The suggestion offered by Morgan, in SCIENCE of September 22, to account for the coupling and repulsion of factors for various characters in inheritance in such forms as Abraxas, Drosophila, fowls, sweet peas, etc., incites this note.
Briefly Morgan's hypothesis is (1) that the materials representing factors that couple are "near together in a linear series" in the chromosomes; (2) that, when pairs of parental chromosomes conjugate, "like regions stand opposed "; (3) that "homologous chromosomes twist around each other," but that the separation of chromosomes is in a single "plane"; (4) that, thereby the …
Botanical Teaching, Charles E. Bessey
Botanical Teaching, Charles E. Bessey
School of Biological Sciences: Faculty Publications
Some months ago a suggestion was made that at this dinner we should ask ourselves the question: Why is it that with the enormous classes we are having in botany there is a marked dearth of properly trained men who can serve as instructors in colleges and universities?
New Elementary Agriculture, Charles E. Bessey, Lawrence Bruner, Goodwin D. Swezey
New Elementary Agriculture, Charles E. Bessey, Lawrence Bruner, Goodwin D. Swezey
School of Biological Sciences: Faculty Publications
This is an agricultural nation. The products of the soil are the basis of her industries and her prosperity. The children of our great Commonwealths should be familiar with our crops, our grains and grasses, our flowers and fruits, our trees and shrubs and weeds, our domestic animals and birds and insects. Our children should have a practical knowledge of the management of a farm, of the composition of the soil, and of the adaptability of the farm and its soil for the cultivation of certain plants and the counter effect of such plant growth upon the soil. They should …
New Studies Of The Arrhenuri, Ruth Marshall
New Studies Of The Arrhenuri, Ruth Marshall
School of Biological Sciences: Faculty Publications
Since the publication of "The Arrhenuri of the United States," in 198, the author has been fortunate enough to secure enough more material to justify the publication of a supplementary paper on this large genus of water-mites. This material consists of collections from new localities in the United States, and of additional material from old collecting grounds, together with a few specimens from other countries. The author's own collections were made in Wisconsin and Illinois. A few new places were visited, as the lakes about Milwaukee ; and more extensive collections were made in previously known bodies of water, as …
An Introduction To The Study Of Rocky Mountain Bees, T. D. A. Cockerell, W. W. Robbins
An Introduction To The Study Of Rocky Mountain Bees, T. D. A. Cockerell, W. W. Robbins
Co
No abstract provided.
Annual Report Of The Director Of The South Dakota Agricultural Experiment Station For Year Ended June 30, 1910, South Dakota State College Of Agriculture And Mechanic Arts
Annual Report Of The Director Of The South Dakota Agricultural Experiment Station For Year Ended June 30, 1910, South Dakota State College Of Agriculture And Mechanic Arts
Agricultural Experiment Station and Research Farm Annual Reports
No abstract provided.
Organization And Polarity Of Protoplasm, John P. Munson
Organization And Polarity Of Protoplasm, John P. Munson
All Faculty Scholarship for the College of the Sciences
In higher forms of life, we usually concede the presence of an organ specialized for the performance of a function. In these higher forms coordination of organs, which entails a regular sequence in their functions, is readily made out; and it seems a mere platitude to say, of these, that organization determines the functions of the organism. To what extent can functions exist in the absence of organization; does the one precede the other; or have function and organization developed simultaneously, out of matter devoid of both structure and function? In my studies on the cell, I have kept these …
The Inheritance Of Sizes And Shapes In Plants, R. A. Emerson
The Inheritance Of Sizes And Shapes In Plants, R. A. Emerson
Department of Agronomy and Horticulture: Faculty Publications
Some years ago Lock reported a cross of a tall race of maize with a shorter race which produced an intermediate height in F1 and exhibited no segregation in F2 when crossed back with one of the parents. Castle's results with rabbits are very similar to those of Lock with maize. Castle summarizes his results in part as follows:
A cross between rabbits differing in ear-length produces offspring with ears of intermediate length, varying about the mean of the parental ear-lengths. . . . A study of the offspring of the primary cross-breds shows the blend of the …
A Monographic Revision Of The Coleoptera Belonging To The Tenebrionide Tribe Eleodiini Inhabiting The United States, Lower California, And Adjacent Islands, Frank E. Blaisdell Sr.
A Monographic Revision Of The Coleoptera Belonging To The Tenebrionide Tribe Eleodiini Inhabiting The United States, Lower California, And Adjacent Islands, Frank E. Blaisdell Sr.
Be
No abstract provided.
Beitrag Zur Kenntnis Der Apidenfauna Von Ostpreußen, J. D. Alfken
Beitrag Zur Kenntnis Der Apidenfauna Von Ostpreußen, J. D. Alfken
A
Die Physikalisch-okonomische Gesellschaft in Konigsberg ersuchte mich auf Anregung von Herrn Kreisassistenzarzt Dr. P. SPEISER in Sierakowitz, welcher alle die entomologische Erforschung der beinen ostlichen preuBischen Provinzen betreffenden Bestrebungen in anerkennenswerter Weise zu forden sucht, durch ihren Vorsitzenden, Herrn Geheimrat Professor Dr. M. BRAUN, eine vierzehntagige Sammelreise zum Studium der Bienenfauna in die Provinz OstprueBen zu unternehman. Infolge dieser Aufforderung war ich in der Zeit vom 31. Jul ibis 13 August 1909 an verschiedenen Orten des genannten Gebietes mit dem Beobachten und Einsammaln der Apiden beschaftigt. Leider waren die ersten beiden Tage meier Anwesenheit in der Provinz, sowie der 4. …
On Some Undescribed Indian Bees (Tetralonia, Megachile And Halictus) (Hym.), Peter Cameron
On Some Undescribed Indian Bees (Tetralonia, Megachile And Halictus) (Hym.), Peter Cameron
Bu
No abstract provided.
Practical Information On The Scolytid Beetles On North American Forests I. Barkbeetles Of The Genus Dendroctonus, Andrew Delmar Hopkins
Practical Information On The Scolytid Beetles On North American Forests I. Barkbeetles Of The Genus Dendroctonus, Andrew Delmar Hopkins
The Bark Beetles, Fuels, and Fire Bibliography
During the writer's investigations of extensive insect depredations in the forests of West Virginia, from 1890 to 1902, he was forcibly impressed with the importance of the forest-insect problem in connection with any future efforts toward the successful management of the forests of this country, and was thus led to give special attention to the subject. It was soon realized that among the principal groups of insect enemies of forest trees the scolytid bark and wood boring beetles must occupy first rank, both in economic importance and systematic interest. Subsequent investigations in West Virginia, in connection with the work of …
Annual Report Of The Director Of The South Dakota Agricultural Experiment Station For Year Ended June 30, 1909, South Dakota State College Of Agriculture And Mechanic Arts
Annual Report Of The Director Of The South Dakota Agricultural Experiment Station For Year Ended June 30, 1909, South Dakota State College Of Agriculture And Mechanic Arts
Agricultural Experiment Station and Research Farm Annual Reports
No abstract provided.
The Arrhenuri Of The United States, Ruth Marshall
The Arrhenuri Of The United States, Ruth Marshall
School of Biological Sciences: Faculty Publications
The Arrhenuri comprise the largest genus of the Hydrachnidz, and one of the most highly differentiated and widely distributed. The genus is easily recognized by the following characters. The thick chitinous covering of the body is pierced by large pores. A circular furrow on the dorsal side marks off an area which is entirely enclosed in the female, in the male usually open onto the posterior extension of the body. The females are oval in form and much alike ; the males are smaller and vary greatly from each other and from the females. They are characterized by a posterior …
New American Bees.— Vi., T. D. A. Cockerell
Annual Report Of The Director Of The South Dakota Agricultural Experiment Station For Year Ending June 30, 1908, South Dakota State College Of Agriculture And Mechanic Arts
Annual Report Of The Director Of The South Dakota Agricultural Experiment Station For Year Ending June 30, 1908, South Dakota State College Of Agriculture And Mechanic Arts
Agricultural Experiment Station and Research Farm Annual Reports
No abstract provided.
Revision Of The Non-Combed Eyed Siphonaptera, Karl Jordan, Nathaniel Charles Rothschild
Revision Of The Non-Combed Eyed Siphonaptera, Karl Jordan, Nathaniel Charles Rothschild
Harold W. Manter Laboratory of Parasitology: Library Materials
Introduction (excerpt)
The importance of certain species of fleas in relation to the epidemiology of plague has been so amply demonstrated (see Journal of Hygiene, volumes VI 1906, p. 426, and VII 1907, p. 395) that an explanation appears scarcely necessary for our publishing a paper dealing with a revision of the non-pectinated eyed Siphonaptera. With the demonstration that fleas are capable of transmitting plague, their study at once ceased to be the mere hobby of a small group of entomological specialists. An accurate knowledge of fleas, both with regard to their structure and biology, is at present a …
The Arrhenuri Of The United States, Ruth Marshall
The Arrhenuri Of The United States, Ruth Marshall
Harold W. Manter Laboratory of Parasitology: Faculty Publications
The Arrhenuri comprise the largest genus of the Hydrachnidre, and one of the most highly differentiated and widely distributed. The genus is easily recognized by the following characters. The thick chitinous covering of the body is pierced by large pores. A circular furrow on the dorsal side marks off an area which is entirely enclosed in the female, in the male usually open onto the posterior extension of the body. The females are oval in form and much alike; the males are smaller and vary greatly from each other and from the females. They are characterized by a posterior prolongation …
Report Of The President Of The South Dakota Agricultural College And The Director Of The Agricultural Experiment Station For The Year Ended June 30, 1907, South Dakota Agricultural College
Report Of The President Of The South Dakota Agricultural College And The Director Of The Agricultural Experiment Station For The Year Ended June 30, 1907, South Dakota Agricultural College
Agricultural Experiment Station and Research Farm Annual Reports
No abstract provided.
Embryology And Evolution, Malo Marius Amunson
Embryology And Evolution, Malo Marius Amunson
Manuscript Thesis Collection
The proofs of evolution must be sought in the entire field of science. Direct proof is found in the study of Morphology, whose bases are comparative anatomy; embryology; in the study of paleontology, of geology, of geographical distribution, in the study of nature and experiments of today. In this vast field of direct proofs of evolution it is our purpose to present some of the evidences of evolution as furnished by one of these, namely, Comparative Embryology.
Spermatogenesis Of The Butterfly, Papilio Rutulus, John P. Munson
Spermatogenesis Of The Butterfly, Papilio Rutulus, John P. Munson
All Faculty Scholarship for the College of the Sciences
For a number of years I have been studying the spermatogenesis of Papilio rutulus (pl. 12, fig. 1) not ,with any one single problem especially in view, but with the aim of ascertaining the entire life history of its sperm cell, its various phases of development, its mode of growth and differentiation, the history of its several parts, and its relation to the organism.
Contributions To The Nautral History Of The Rocky Mountains. I, T. D. A. Cockerell
Contributions To The Nautral History Of The Rocky Mountains. I, T. D. A. Cockerell
Ca
No abstract provided.
The Waterville Mail (Vol. 59, No. 14): August 16, 1905, The Mail Publishing Company
The Waterville Mail (Vol. 59, No. 14): August 16, 1905, The Mail Publishing Company
The Waterville Mail (Waterville, Maine)
Continues The Eastern Mail (July 1847-August 1863).
Published weekly, September 4, 1863 - May 9, 1906.
Publishers: Maxham & Wing (1863 - December 2,1885); Ephraim Maxham (December 1885); Wing & Wing (January 1886 - March 21, 1891); Charles G. Wing (March 21, 1891 - April 17, 1891); Prince & Wyman (April 17, 1891 - February 26, 1896); The Mail Publishing Company (February 26, 1896 - May 9, 1906).
See Gerould, W.G.: American newspapers, 1821-1836; Whittemore, E.C.: Centennial history of Waterville.
Colby Libraries catalog record (CBBcat): http://cbbcat.net/record=b1209701~S19
WorldCat record (OCLC): http://www.worldcat.org/oclc/10486964