CONTENTS. 
Pathological and chemical 
Personal observation 
Evolution 
Summary of the physiology of respiration 
PROTECTIVE AND EXcRETORY FUNCTIONS OF THE SKIN . 
General . 
Comparative . 
The excretory function of the din 
Normal sweat . 
Pathological : : ; 
Comparative—Respiration by: the an : . 
Death from suppression of the functions of the skin 
The excretion of perspiration 
Experimental . 
Human physiology . : . . ee: 
Absorption by the skin . : ; . 4 
Comparative . : 
Summary 
EXCRETION BY THE Kwwyey 
Anatomical 
Comparative . 
Urine considered physically sia chemically: 
Specific ae i 
Color 
Reaction . 
Quantity . - 
Composition : Witrogehous eryatalline bailieas 
Non-nitrogenous organic bodies. 
Inorganic salts 
Abnormal urine 
Comparative . 
The secretion of urine . 
Methods of investigation 
Theories of secretion . . . Ye 
Nervousinfluence. . . . . «. 4 
Pathological. 
The expulsion of urine . 
“General . 5 ‘ 
Facts of experiment na of mananienee 
Pathological 
Comparative : 
Summary of urine and the fiections of the hides 
Tue Metago.ism or THE Bopy 
General remarks ‘ 
The metabolism of the liver . 
The glycogenic function 
The uses of glycogen 
Pathological 
Metabolism of the spleen 
Histological 
