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THE AMEBIC AN NATURALIST [Vol. LIV 



TABLE VIII 

 The Skin 



the skin. It therefore appears that on the present 

 scheme of classification they may best be put here. 



There is no doubt whatever that the three diseases of 

 Table IX belong biologically with the endocrinal system. 



In the foregoing tables have been included all statis- 

 tically recognized causes of death which it is now possible 

 to classify on an organological basis, and which have a 



significant death rate. The residue comprises in gen- 

 eral three categories (a) accidental and homicidal deaths ; 

 (6) senility; and (c) deaths from a variety of causes 

 which are statistically lumped together and can not be 

 disentangled. Accidental and homicidal deaths find no 

 place in a biological classification of mortality. A man 

 organically sound in every respect may be instantly 

 killed by being struck by a railroad train or an automo- 



