Vital Physics. 9 



The essential difference between the animal and vegetable 



kingdom, from the point of membranous morphology, may 



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be briefly summed up as follows : 



Between the inner and outer wall of a vegetable cell, one 

 or other, is much more active in its vital function than the 

 one it opposes, and so gives an idea of serous and mucous 

 membrane, but not of contractile membrane, nor of a nervous 

 system of any kind. Hence a broad line of distinction is 

 here given between the animal and vegetable kingdoms. 



Much complaint will be made of the very brief manner in 

 which animal morphology is considered. But if it were 

 entered upon, somewhat fully, it would take up too much 

 space, and sufficient is given for a simple outline or sketch. 

 It comprises the substance of thirty years of careful observa- 

 tion and reflection. 



