Life Sciences Commons^™

Forestry Bulletin No. 4: Root Development Of Loblolly Line Seedlings In Modified Environments, M. Victor Bilan

Forestry Bulletins No. 1-25, 1957-1972

A study that looked at root development of loblolly pine seedlings in modified environments.

The Potential Production Of Furfural From Sulfite Spent Liquors, Dale Keiser

Paper Engineering Senior Theses

Summary

Furfural was obtained in significant amounts by the action of mineral acid on pentose sugars. Pentose sugars are present in Sulfite Spent Liquors because of the hydrolysis which takes place during the pulping. The dehydrating action of the acid on the pentoses takes place during the pulping. The dehydrating action of the acid on the pentoses takes place at about 100 degrees Centrigrade. The furfural was distilled from the raw acidified spent liquor and can be purified further by fractional distillation. Hardwood Sulfite Spent Liquors gave the highest yields. This is because hardwoods contain more five carbon sugars. A …

The Bleaching Of Groundwood, Dale C. Hedquist

Paper Engineering Senior Theses

Present industrial methods for the bleaching of groundwood are discussed. The conditions and chemicals used for hypochlorite, sodium and zinc hydrosulphite, bisulphite and sodium and hydrogen peroxide bleaching are reviewed. Consistencies, retention time, pH and temperature for maximum brightness are discussed for each process. Chemical reactions for the removal of color are given for several of the processes.

The Effect Of Starch On Clay Dispersions, John L. Moore

Paper Engineering Senior Theses

Cationic starches and anionic (oxidized) starches are compared in this thesis with respect to their effect upon dispersion. The methods used for determining dispersion quality were relative sediment volume (RSV) and the Hercules Hi-Shear Viscometer. These methods are compared as to-their applicability for use as practical. tools in determining color dispersion quality. Limitations of RSV are discussed with regard to clay-starch mixtures. Comparisons are made using both types of starch on predispersed and undispersed clays. Hercules rheograms are compared for samples using both starches and clays at 40 percent solids. The rheograms indicate no difference between the cationic and anionic …

A Study Of The Character Of Spent Liquor From The Neutral [Sic] Sulfite Semichemical Process Of Pulping, Bob Legault

Paper Engineering Senior Theses

Introduction

The utilization of spent liquors has been a major item in the research and development field of the pulp an paper industry. In recent years, this problem is being given more serious emphasis due to the tightening of antipollution laws by government agencies. This situation, together with the individual mill's desire to find programs for sound and effective recovery of values are major recipients of engineering and research man hours and dollars. This all points towards a better future for the industry and the community. A closer study than just analysis and physical constants determination is undoubtedly needed in …

Distribution Of Latex In Impregnated Paper, Donald Ward Nay

Paper Engineering Senior Theses

Introduction

Impregnation of paper products first began in the early 1920's. It became an important aspect of the industry during World War II when several factors came together to provide the basis for its growth. First of all, the development of synthetic materials provided many new agents with new properties in which to impregnate with. New equipment available at this same time made application and control of the process much easier. To put the drive in the new area, there simultaneously occurred a realization of many new products that impregnated papers could provide. The most important of those during World …

Effect Of Gibberellin On Height Growth Of One-Year Old Seedlings Of Loblolly Pine, M. Victor Bilan, A.K. Kemp

Faculty Publications

No abstract provided.

Stimulation Of Cone And Seed Production In Pole-Size Loblolly Pine, M. Victor Bilan

Faculty Publications

No abstract provided.

Further Results Of Bud And Twig Pruning Of Loblolly Pine, M. Victor Bilan, C.F. Korstian

Faculty Publications

No abstract provided.

Financial Management Of Large Forest Ownerships, John Fedkiw, William L. Moise, Walter H. Meyer, Meade Whitaker, Henry I. Barclay Jr., C. G. Mclaren, J. A. Segur

Yale School of the Environment Bulletin Series

No abstract provided.

Honey Flora Calendar For September, R S. Coleman

Journal of the Department of Agriculture, Western Australia, Series 4

A look at Flora available for September

Trees Of Western Australia. 63. Yellow Tingle (E. Guifoylei, Maiden). 64. Weeping Gum (E. Sepulcralis, F. Muell.). 65. Kingsmill's Mallee (E. Kingsmillii Maiden Et Blakely). 66. Hopetoun Mallee (E. Leptocalyx, W.F. Blakely). 67. Capped Mallee (E. Pileata, W.F. Blakely). 68. Eucalyptus Carnabyi (Blakely And Steedman). 69. Tallerack (E. Tretragona (R.Br.) F. Muell.). 70. Eucalyptus Micranthera (F. Muell. Ex. Benth.), Charles Austin Gardner

Journal of the Department of Agriculture, Western Australia, Series 4

THE yellow tingle is one of the large forest trees of the lower South-West, and although it possesses many good qualities, its limited range renders it of less importance than its associates—the jarrah and karri.

Honey Flora Calendar For April, R S. Coleman

Journal of the Department of Agriculture, Western Australia, Series 4

A look at Flora available in April

Honey Flora Calendar For October, R S. Coleman

Journal of the Department of Agriculture, Western Australia, Series 4

A look at Flora available in October

Trees Of Western Australia. 71. Coarse-Leaved Mallee (Eucalyptus Grossa F. Muell. Ex Benth.). 72. Desmond Mallee (Eucalyptus Desmondensis Maiden & Blakely). 73. Eucalyptus Falcata Turcz. 74. Jerdacattup Mallee (Eucalyptus Goniantha Turcz.). 75. Redheart (Eucalyptus Decipiens Endl.). 76. Eucalyptus Corrugata Luehmann. 77. Goldfields Blackbutt (Eucalyptus Le Souefii Maiden). 78. Strickland's Gum, Or Goldfields Yellow-Flowered Gum (Eucalyptus Stricklandii Maiden), Charles Austin Gardner

Journal of the Department of Agriculture, Western Australia, Series 4

THIS mallee is unmistakable by reason of its peculiar habit and thick roughbarked stem and branches, both of which have longitudinally-fissured persistent bark right up to the distinctly reddish branchlets.

The leaves are broad and thick, a bright shining green in colour, with the mid-ribs usually a purplish-red. The heads of flowers are on thick red round-in-section foot-stalks which hang almost vertically, and the reddish bud-cap conceals the ultimately free, bright yellow filaments.

The widely-spreading thick branches, and in general the rough stout appearance of the shrub inspired the name "grossa" from the Latin grossus meaning thick.

Honey Flora Calendar For November, R S. Coleman

Journal of the Department of Agriculture, Western Australia, Series 4

A look at Flora available in November

Honey Flora Calendar For December, R S. Coleman

Journal of the Department of Agriculture, Western Australia, Series 4

A look at Flora available in December.

Honey Flora Calendar For January, R S. Coleman

Journal of the Department of Agriculture, Western Australia, Series 4

A look at Flora available in January.

Honey Flora Calendar For July, R S. Coleman

Journal of the Department of Agriculture, Western Australia, Series 4

A look at Flora available for July

Trees Of Western Australia. 79. Eucalyptus Foecunda (Schau.). 80. Fluted Horn Mallee (E. Stowardii Maiden). 81. Eastern Goldfields Horned Mallee (E. Eremophila Maiden). 82. Oldfield's Mallee (E. Oldfieldii F. Muell.), Charles Austin Gardner

Journal of the Department of Agriculture, Western Australia, Series 4

THIS species is a mallee with an average stature of 5-15 feet, with several erect twiggy branches, the bark smooth except at the very base where unshed patches of a dark greyish-brown adhere to the stems, otherwise it sheds in small plates, leaving a smooth grey-brown bark.

Honey Flora Calendar For August, R S. Coleman

Journal of the Department of Agriculture, Western Australia, Series 4

A look at Flora available in August

Wild Life In A Modern Age, Clee Francis Howard Jenkins

Journal of the Department of Agriculture, Western Australia, Series 4

THE present human population of the earth is estimated at about 2 1/2 thousand million, and reliable sources consider that this figure will be doubled by the year 2000.

Although the pessimistic forecasts of Malthus have not yet come true, it is obvious that the world's food requirements, must lead to increased exploitation of land and other primary resources, with consequent repercussions on all forms of wild life.

Take Care Of That Wood-Work, H M. Gloster

Journal of the Department of Agriculture, Western Australia, Series 4

IN these oft-quoted lines, Joyce Kilmer expressed a thought which many of us may have cherished.

Most of us are tree-lovers and few people can witness the felling of a forest giant without a pang of regret. It is consoling to reflect however that "tree-butchery"—the wasteful exploitation of forest resources—is largely a thing of the past.

Honey Flora Calendar For March, R S. Coleman

Journal of the Department of Agriculture, Western Australia, Series 4

A look at Flora available for March

Trees Of Western Australia. 39. Comet Vale Mallee (Eucalyptus Comitae-Vallis). 40. Woodline Mallee (E. Cylindrocarpa Blakely). 41. Ribbon-Barked Mallee (E. Sheathiana Maiden). 42. Burracoppin Mallee (E. Burracoppinensis Maiden Et Blakely). 43. Cap-Fruited Mallee (E. Dielsii C.A. Gardn.). 44. Spearwood Mallee (E. Doratoxylon F. Muell.) 45. Apple Mallee (E. Buprestium F. Muell.). 46. Goblet Mallee (E. Scyphocalyx (F. Muell.) Maiden Et Blakely), Charles Austin Gardner

Journal of the Department of Agriculture, Western Australia, Series 4

THIS mallee, formerly thought to be restricted to the Comet Vale district, must be very rare in that locality, since it is seldom found growing there, but on the other hand it has an extensive range, being found as far west as Perenjori. Kalannie and Kulja, thence eastwards to Comet Vale, and southward to Mount Holland which lies south of Southern Cross.

Trees Of Western Australia. 55. Cabbage Gum (Eucalyptus Clavigera A. Cunn. Ex Schau.). 56. Large-Leaved Cabbage Gum (E. Grandifolia R. Br. Ex Benth.). 57. Ghost Gum (E. Papuana F. Muell. ). 58. Rough-Leaved Range Gum (E. Aspera F. Muell.). 59. Weeping Box (E. Patellaris F. Muell.). 60. Silver-Leaved Box (E. Pruinosa Schau.). 61. Kimberley White Gum (E. Houseana W.V. Fitz. Ex Maiden). 62. Poplar Gum (E. Bigalerita F. Muell.), Charles Austin Gardner

Journal of the Department of Agriculture, Western Australia, Series 4

THIS tree is one of the common trees of Kimberley, inhabiting the sandy soils of the sandstone ranges, but is found less frequently on the sandy flat country.

It is most common in northern Kimberley extending as far south as the King Leopold Range, and is less frequently encountered on the plains of the Ord and Fitzroy Rivers.

Soil Factors Affecting The Growth Of Quaking Aspen Forests In The Lake States, Joseph Henry Stoeckeler

Aspen Bibliography

Study reported here was made for the purpose of relating growth rate of quaking aspen in the Lake States to the physical and chemical properties of the soils. The effect of shallow water tables and the role of repeat burns were also studied.

Evaluating The Growth Potential Of Aspen Lands In Northern Minnesota, R.O. Strothmann

Aspen Bibliography

No abstract provided.

Some Aspects Of The Aspen-Birch-Spruce-Fir Type In Ontario, D.W. Maclean

Aspen Bibliography

The mixedwood types of the Boreal Forest in Ontario occupy sites that have a high potential for the production of spruce and fir. These types are commonly made up of various mixtures of trembling aspen, white birch, black spruce, white spruce, and balsam fir². In the unmanaged forest, this mixture of species usually results from fire, and the coniferous component is largely spruce. In the managed forest, fir rather than spruce is likely to be the main coniferous species in the next crop where measures are not employed to alter this trend in succession. This is a matter …

The Poplar Borer In Relation To Aspen Stocking, H.G. Ewan

Aspen Bibliography

No abstract provided.