This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated.1904 Excerpt: ... CONTRIBUTIONS FROM THE Botanical Laboratory ' the University of Pennsylvania VOL. II, NO. 3. PRINTED ON THE MRS. JAMES MCMANES FUND. A Comparative Study of the Cytology and Movements of the Cyanophyceas. (WITH PLATBS XXIII-XXV.) Thetis presented to the Department of Philosophy. University of Pennsylvania. Hay 1903, in partial fulfilment of requirements for the Degree of Doctor of Philosophy. Read before the Botanical Society of Pennsylvania, October 18th. 1901, and May 15th, 1903 By Orv1lle P. Ph1ll1ps, M. S., Ph. D. The problem of heredity has been attacked from many sides. Various theories concerning the transmission of characteristics, whether acquired or otherwise, have been given to the world, and as many have been withdrawn or proven untenable, at least by some authorities. From Thales to In view of the recent appearance of three valuable contribution to the above subject, it may be stated that Dr. Phillips' completed thesis was placed in my hands on May 3d, 1903, and has been in my care since. Its publication has been unavoidably delayed till now, but no alterations have been made on it. While the views here set forth can claim no priority over those already published, their appearance may aid in the settlement of disputed points.--J. M. MacFarlanb, Editor. Darwin the efforts of biological investigation have been largely directed towards the solution of this problem. But many of the investigators worked wholly upon gross anatomy, as it might be termed, in distinction to the study of the cell. They failed to realize that, as the alchemist was being driven from masses to atoms as a basis for his investigations, they too, if they were to solve the questions which interested them most, must get down to the minutest structural elements of plants and anim...
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