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Articles 12841 - 12842 of 12842
Full-Text Articles in Entire DC Network
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.
A New Method For The Quantitative Determination Of Plankton Hauls, Henry B. Ward
A New Method For The Quantitative Determination Of Plankton Hauls, Henry B. Ward
Studies from the University of Nebraska Zoological Laboratory
Only two methods of estimating the quantity of plankton obtained in a haul of the vertical net are known to me. These two may be called the volumetric and the gravimetric. Both have been used by observers in various parts of the world, but so far as I know have never been comparatively tested in order to ascertain the relative value of results obtained by the two. The experience of the past year has shown some disadvantages in the first method, while the second has certain evident objections which rendered its employment in this case out of the question. In …