Die Hertwig, Oscar 1849-1922 creator text utu 2026 monographic de 1 online resource : multiple file formats "Die Zelle und die Gewebe (Vol. 1/2)" by Oscar Hertwig is a scientific publication written in the late 19th century. It presents a foundational synthesis of the general anatomy and physiology of cells and tissues, uniting histology with physiology and developmental biology. Volume one concentrates on the cell’s structure, properties, division, fertilization, and heredity, while the planned second volume addresses tissue structure, origin, and function. The work also situates current knowledge within the history of cell theory and protoplasm, clarifying ongoing scientific debates. The opening of the treatise sets out a clear purpose: to overcome the traditional split between anatomy and physiology at the cellular level and to give cell physiology equal weight alongside structure. In a programmatic preface, Hertwig criticizes standard histology texts for neglecting the living properties of cells, links this book to his university lectures, and frames it as a complement to his embryology text by distinguishing morphological from histological differentiation. He outlines the book’s scope via a detailed table of contents and emphasizes a balanced, historically aware method that presents competing theories without claiming final certainty. The first chapter then surveys the rise of cell theory from plant studies (Malpighi, Grew) through Schleiden’s focus on the nucleus and Schwann’s generalization to animals, noting early errors (membrane-centrism, cytoblastem) and the later shift to a protoplasm-centered view (Mohl, Purkinje, Max Schultze, Brücke), culminating in the modern idea of the cell as protoplasm containing a nucleus. The second chapter begins by treating the cell as an organism and divides analysis into protoplasm and nucleus, defending the term “protoplasm” and describing its appearance (hyaline surface layer versus granular interior), an illustrative experiment on the cortical layer of frog eggs, and its imperfectly known chemistry (proteins such as plastin, high water content, salts, alkaline reaction, and metabolites). It closes with a critical overview of rival models for fine cytoplasmic structure—network, foam/waben, filar, and granule/bioblast views—highlighting both the evidence and the limits of each. (This is an automatically generated summary.) Release date is 2026-01-12 Peter Becker and the Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) Originally published: Jena: Fischer, 1893 Physiology Anatomy Cells QH Jena: Fischer, 1893 https://archive.org/details/diezelleunddiege02hert https://www.gutenberg.org/ebooks/77678 https://archive.org/details/diezelleunddiege02hert https://www.gutenberg.org/ebooks/77678 UtSlPG 260607 20260610134811.0 77678