Bøger af August Weismann

""On Germinal Selection As A Source Of Definite Variation"" is a scientific book written by August Weismann and published in 1896. The book explores the idea of germinal selection, which is the theory that certain variations in organisms are caused by the selection of germ cells during reproduction. Weismann argues that this process is responsible for the creation of new species and the evolution of life on Earth. The book is divided into several chapters, each of which explores a different aspect of germinal selection, including its relationship to natural selection, the role of the environment in shaping variation, and the mechanisms by which germ cells are selected. Weismann's ideas were controversial at the time of publication, but they have since become an important part of the scientific understanding of evolution and genetics. Overall, ""On Germinal Selection As A Source Of Definite Variation"" is a seminal work in the history of evolutionary biology and an important contribution to the scientific literature of its time.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.

Studies In The Theory Of Descent (Complete): With Notes And Additions By The Author Translated And Edited, With Notes, By Raphael Meldola With A Prefatory Notice By Charles Darwin (Complete Edition Of Two Volumes)This book is a result of an effort made by us towards making a contribution to the preservation and repair of original classic literature.In an attempt to preserve, improve and recreate the original content, we have worked towards:1. Type-setting & Reformatting: The complete work has been re-designed via professional layout, formatting and type-setting tools to re-create the same edition with rich typography, graphics, high quality images, and table elements, giving our readers the feel of holding a 'fresh and newly' reprinted and/or revised edition, as opposed to other scanned & printed (Optical Character Recognition - OCR) reproductions.2. Correction of imperfections: As the work was re-created from the scratch, therefore, it was vetted to rectify certain conventional norms with regard to typographical mistakes, hyphenations, punctuations, blurred images, missing content/pages, and/or other related subject matters, upon our consideration. Every attempt was made to rectify the imperfections related to omitted constructs in the original edition via other references. However, a few of such imperfections which could not be rectified due to intentional\unintentional omission of content in the original edition, were inherited and preserved from the original work to maintain the authenticity and construct, relevant to the work.We believe that this work holds historical, cultural and/or intellectual importance in the literary works community, therefore despite the oddities, we accounted the work for print as a part of our continuing effort towards preservation of literary work and our contribution towards the development of the society as a whole, driven by our beliefs. We are grateful to our readers for putting their faith in us and accepting our imperfections with regard to preservation of the historical content. HAPPY READING!

Die Entstehung der Sexualzellen bei den Hydromedusen. - Zugleich ein Beitrag zur Kenntnis des Baues und der Lebenserscheinungen dieser Gruppe ist ein unveränderter, hochwertiger Nachdruck der Originalausgabe aus dem Jahr 1883.Hansebooks ist Herausgeber von Literatur zu unterschiedlichen Themengebieten wie Forschung und Wissenschaft, Reisen und Expeditionen, Kochen und Ernährung, Medizin und weiteren Genres. Der Schwerpunkt des Verlages liegt auf dem Erhalt historischer Literatur. Viele Werke historischer Schriftsteller und Wissenschaftler sind heute nur noch als Antiquitäten erhältlich. Hansebooks verlegt diese Bücher neu und trägt damit zum Erhalt selten gewordener Literatur und historischem Wissen auch für die Zukunft bei.