Contributions, Volume 2

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1904 - Botany
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Page 238 - In accepting this view we admit that the cytoplasm of the egg is, in a measure, the substratum of inheritance, but it is so only by virtue of its relation to the nucleus, which is, so to speak, the ultimate court of appeal. The nucleus cannot operate without a cytoplasmic field in which its peculiar powers may come into play ; but this field is created and moulded by itself. Both are necessary to development; the nucleus alone suffices for the inheritance of specific possibilities of development.
Page ix - Information concerning courses offered in the College, as follows: Illustrated Descriptive Circular; A, Admission to College; B, Arts and Science; C, Finance and Economy (Wharton School); D, Biology; E, Music; F, Teachers' Courses; Q, Architecture; H, Mechanical Engineering; I, Electrical Engineering; K, Civil Engineering; L, Chemistry and Chemical Engineering; M, Social Work; N, Commerce, Diplomacy and International Law; O, Business Practice and Banking. Report of the Provost (published in January)....
Page ix - Report of the Provost (published in January). Group II. — Serial Publications. Series in Philology, Literature and Archaeology. Series in Philosophy. Series in Political Economy and Public Law.* Series in Botany. Series in Zoology. Series in Mathematics. Series in Hygiene. Series in Astronomy.
Page 230 - Plum. high scientific value of experimental stations for the study of plant life. Experiments are now in progress that may aid somewhat the solution of these problems. EXPLANATION OF PLATES XX, XXI. Plate XX. Branch of Beach Plum, belonging to form No. 6. Reduced onefourth. Plate XXI. Branch of Beach Plum, belonging to form No. 4. Reduced one-half.
Page 53 - ... primitive collateral bundle system prevails. 8. No internal phloem is present in the root. 9. A copious fungoid growth is found in the cortex of the root. Absorption of starch usually results in cells inhabited by the fungus. 10. No internal phloem is present in the lower portion of the hypocotyl, nor in the cotyledons. 1 1 . Two of the internal phloem patches of the stem arise just below the cotyledonary node, the other two just below the node bearing the first pair of leaves. 12. Internal phloem...
Page 53 - ... 3. The internal phloem patches are bounded internally by a two-celled phloem sheath. 4. The internal phloem patches grow centrifugally by means of a medullary cambium, the inner and older layers in time becoming crushed and obliterated. 5. Death of the pith occurs early in the first year. 6. The continued disintegration of the pith and growth of the internal phloem results in the filling up of the pith cavity with the latter. 7. The internal phloem, which runs into the petiole, constitutes there...
Page x - ... the Treasurer and the several Deans. Single copies are mailed free upon request. Group II consists of a number of serial publications in the several fields of literature, science and philology. They are issued in separate series at irregular intervals (for the most part), and represent the results of original research by, or under the direction of, members of the staff of instruction of the University.
Page i - Qermanica (quarterly). Translations and Reprints from the Original Sources of European History (occasional). American Law Register (monthly). EXPLANATORY. Group I consists of publications issued annually under the direct auspices of the Provost and Trustees. The University Catalogue is a volume of about 500 pp. It contains detailed information concerning all departments, lists of officers and students, with addresses, etc. No charge is made for the Catalogue, but in all cases requests for a copy...
Page 404 - ... Internal to the horny cap is the outer indusial layer. It shows rather large columnar cells, very delicate-walled and empty (9). It fades out toward the micropyle. Within it, in a lateral position and almost or quite absent at the two poles, are several layers of loose, thin-walled empty cells ( 10), the tegmen. By the growth of the embryo these are crowded and partially absorbed until they leave only an irregular thin lamellated layer pressed close to the testa. Next to the embryo, and separated...
Page 167 - ... writers as to what is the correct explanation of their observations. Before stating my own observations and conclusions, a short review of the more recent papers will be given from which can be seen how greatly authors differ on the subject. A valuable cytological paper which reviews and condenses the general literature on cell division, is that of Dr. T. Montgomery, entitled, " Comparative Cytological Studies with Especial Regard to the Morphology of the Nucleolus." His observations are based...

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