Conklin edwin g (55 resultados)

Soft cover. Condición: Very Good. pp205-222, bibliography. Removed from ANNUAL REPORT OF THE BOARD OF REGENTS OF THE SMITHSONIAN INSTITUTION FOR THE YEAR ENDING JUNE 30, 1934. VG. In plastic report covers. From the introduction: : "If one were searching for the most inclusive subject in modern scientific research, what other topic would touch so may fields as that of evolution? In the nonliving world it includes almost everything from the evolution of atoms to that of universes; in the living world practically everything from amoeba to man, from germ cells to developed organisms, from reflexes to reason, from savagery to civilization. Almost all the work of modern science and learning could be classified under some of these fields. The small part of this vast theme which I shall touch upon in this address concerns merely some of the recent work on the methods and causes of organic evolution.".…

Pamphlet. Condición: Very Good. Vol 67, No 711, pp. 289-297, Extracted from orig vol, begins with title page, Stapled & trimmed, thus is llike a pamphlet, last page in facsimile else VG.

Pamphlet. Condición: Very Good. Vol 63, No 684, pp. 5-36, Extracted from orig vol, begins with title page, trimmed & stapled, thus it is like a pamphlet, VG.

Pamphlet. Condición: Very Good. Oct. 1903, pp. 667-675, Illus, Extracted from orig vol, begins with title page, trimmed & stapled, thus is like a pamphlet, VG.

Pamphlet. Condición: Very Good. Vol 73, No 749, pp. 538-546, Illus, Extracted from orig vol, begins with title page, trimmed & stapled, thus is like a pamphlet, VG.

Pamphlet. Condición: Very Good. Vol 51, Article 8, pp. 1281-1294, Extracted from orig vol, thus begins with title page, trimmed & stapled pamphlet, else VG.

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

StapleBound. Copyright Date: 1913 SM QUARTO, AUGUST 1913, PP.179-198, GOOD, SOME MARGINAL NOTATION AND UNDERLINING Offprint FROM THE POPULAR SCIENCE MONTHLY. ERNST ABBE COPY, SIGNED BY BOTANIST IRVING W. BAILEY AND STAMPED HIS PROPERTY, IRVING WAS AN P;DER COLEAGUE OF ABBE FROM THE UNIVERSITY OF MINNESOTA (ilustrador).…

Condición: New.

Hardback. First edition 1915. Conklin was a zoologist/biologist. This book has b&w photos, references, glossary and an index. 533 Good. The covers and spine have light shelf wear and soiling. Two cover corners have bumping. First owner's name in ink inside. No dust wrapper.

HRD. Condición: New. New Book. Shipped from UK. Established seller since 2000.

HRD. Condición: New. New Book. Shipped from UK. Established seller since 2000.

Condición: New.

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

Hardcover. Condición: Good. Prompt Shipment, shipped in Boxes, Tracking PROVIDEDGood hardcover, no dust jacket. Second revised edition. 1916. Princeton University Press. Clean pages, lightly tanned. Pencil markings to front pastedown, endpapers. Fray to head and heel of spine, corner tips. Chestnut brown boards with gilt lettering. 8vo. 550 pages.…

Hardcover. Condición: Good. 1st Edition. xiv, 533 pp; 96 figs. Original cloth. Top & bottom of spine rubbed. Corners of the covers a little bumped and rubbed. Good. First Edition.

Condición: VG. Baltimore, MD 1917 first edition. Williams & Wilkins. royal octavo wraps. Conklin article pp. 101-104. VG no owner marks.

Paperback. Condición: New. Print on Demand. Delving into the origin and development of the ascidian egg, this book offers a detailed examination of the cell lineage and organization of this fascinating organism. The author, a renowned scientist, meticulously describes the maturation and fertilization processes, highlighting the unique movements of the egg's protoplasm and the formation of the yellow crescent, a crucial landmark in its development. Through meticulous observations and a wealth of illustrations, the book traces the early development of the ascidian embryo, providing valuable insights into the fundamental principles of cell division and differentiation. The author's groundbreaking research challenges established theories and sheds new light on the complexities of egg organization and the origins of embryonic structures. This book is an essential resource for developmental biologists, embryologists, and anyone seeking a deeper understanding of the intricate processes that govern the formation of life. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Condición: VG. 1934. Article at pp. 137-158 in single issue of Proceedings of American Philosophical Society. VG plus.

Paperback. Condición: New. Print on Demand. This book explores the fascinating phenomenon of head formation in the flatworm Planaria. Through a series of detailed experiments, the author demonstrates that the frequency of head formation in Planaria can be controlled by exposing the worms to specific concentrations of various anesthetics. The author's findings challenge the prevailing view that head formation is a purely genetic phenomenon. Instead, their research indicates that environmental factors, specifically the presence of certain chemicals, play a significant role in determining how often heads form in Planaria. This discovery opens up new avenues for understanding how organisms develop and how their form and function are shaped by their environment. The book provides a valuable resource for biologists and anyone interested in the intricate processes of regeneration and development. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Paperback. Condición: New. Print on Demand. This book presents an in-depth analysis of the relationship between cell size and nuclear size during various stages of normal development. Using a variety of species, the author examines the factors that influence cell division and growth, including the unequal distribution of yolk, experimental alterations, and the variations in size among different cell types. The author provides a detailed account of cell lineage, focusing on the early differentiations of the developing egg. By studying individual blastomeres throughout the cleavage period, the author explores the relationship between nuclear growth and the increase in chemical substances and processes during cleavage, offering insights into senescence, rejuvenescence, and the ratio of nucleus to plasma. This book contributes to our understanding of the fundamental principles governing the development and differentiation of cells, providing a valuable resource for researchers in developmental biology and cell biology. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Pamphlet. Condición: Collectible; Very Good. Prompt Shipment, shipped in Boxes, Tracking PROVIDEDOffprint. Reprinted from American Naturalist vol. LXVII, 1933. Previous name stamps of Karl Sax and E. M. East. Signed presentation copy, with compliments of the author.Offprint. Original wrappers*. Signed inscribed presentation. …

Pamphlet. Condición: Collectible; Very Good. Prompt Shipment, shipped in Boxes, Tracking PROVIDEDOffprint. Reprinted from The Scientific Monthly, Vol. XXXV. 1932. First separate edition. Offprint. Original wrappers. *. First edition.

Pamphlet. Condición: Collectible; Very Good. Prompt Shipment, shipped in Boxes, Tracking PROVIDEDOffprint. Very good condition. First separate edition. Offprint. Original wrappers. Ownership signature of George F. Atkinson on front cover. Science. Biology.*.

Pamphlet. Condición: Collectible; Very Good. Prompt Shipment, shipped in Boxes, Tracking PROVIDEDOffprint. Very good condition. First separate edition. Offprint. Original wrappers. Ownership signature of George T. Atkinson on front cover. With compliments of the author stamp on front cover. Science. Biology.*. …

Pamphlet. Condición: Collectible; Very Good. Prompt Shipment, shipped in Boxes, Tracking PROVIDEDOffprint. First edition. Offprint. Original wrappers.*.

Pamphlet. Condición: Collectible; Very Good. Prompt Shipment, shipped in Boxes, Tracking PROVIDEDOffprint. First edition. Offprint. Original wrappers.*.

Pamphlet. Condición: Collectible; Very Good. Prompt Shipment, shipped in Boxes, Tracking PROVIDEDOffprint. Reprinted from Science, N.S. Vol. XXXVII, 1913. Some tearing of delicate front page. First separate edition. Offprint. Original wrappers. *. First edition.