. A manual of elementary zoology . Zoology. THE FROG : HISTOLOGY, GERM CELLS, DEATH 87 the body exists only to support and protect it. Life is the life of protoplasm. It is sometimes attempted to recognise in protoplasm a truly living part which undergoes relatively little change. FIG. 46.—A portion of the section shown in Fig. 45, more highly magnified. , Blood vessel; , connective tissue of mucous membrane ; , circular layer of muscle fibres; eg., epithelium; , goblet cell; , longi- tudinal layer of muscle fibres; let., "lacteal" or lymph vessel of the intestine;
. A manual of elementary zoology . Zoology. THE FROG : HISTOLOGY, GERM CELLS, DEATH 87 the body exists only to support and protect it. Life is the life of protoplasm. It is sometimes attempted to recognise in protoplasm a truly living part which undergoes relatively little change. FIG. 46.—A portion of the section shown in Fig. 45, more highly magnified. , Blood vessel; , connective tissue of mucous membrane ; , circular layer of muscle fibres; eg., epithelium; , goblet cell; , longi- tudinal layer of muscle fibres; let., "lacteal" or lymph vessel of the intestine; leu., leucocyte of lymph or lymph corpuscle; , peritoneal epithelium. and a part which is not truly alive, but undergoes the changes which provide the bulk of the life energy, under the influence of the living part acting as a kind of ferment (p. 50). No doubt it is the case that there are many grades of metabolism, but from the broad point of view it is better. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Borradaile, L. A. (Lancelot Alexander), 1872-1945. London : H. Frowde, Hodder & Stoughton
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1920
