. Evolution and animal life; an elementary discussion of facts, processes, laws and theories relating to the life and evolution of animals . nterpreting just what one sees when usingthe highest microscopic powers make it impossible to be reallycertain of understanding what is seen. But however variousour interpretations of the finer structure of protoplasm, theyagree that any bit of protoplasm is a viscous colloidal masscomposed of at least two substances of somewhat different phys-ical make-up. One of these substances is evidently denser thanthe other and is arranged in the form of grains, ro
. Evolution and animal life; an elementary discussion of facts, processes, laws and theories relating to the life and evolution of animals . nterpreting just what one sees when usingthe highest microscopic powers make it impossible to be reallycertain of understanding what is seen. But however variousour interpretations of the finer structure of protoplasm, theyagree that any bit of protoplasm is a viscous colloidal masscomposed of at least two substances of somewhat different phys-ical make-up. One of these substances is evidently denser thanthe other and is arranged in the form of grains, rods, threads,or droplets scattered through a ground mass. Concerning thisdimorphic condition of protoplasm practically all biologists areagreed. The names, hyaloplasm, paraplasm, or others of sim- LIFE, ITS PHYSICAL BASIS AND SIMPLEST EXPRESSION 29 ilar significance are applied to the viscous hyaline groundsubstance, while the denser parts are variously called micro-somes, granules, fibrils, spongioplasm, etc. The important part of all this is the fact that all the biologistsare not agreed on any certain kind of intimate structure of B. iS2^&9 ruiWtHV%Sn> i®jfe : • -V • - ; A-. ^,, . V<~< i -U- r- --w-: v • ^.\ /v^v^is t ^V\.;.Xir^s^jOri) &S£ ;•-,-. ^^--. ,^w w>-;£% ^Hii!;!!^
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