480 BIOLOGY. 



through the urine. Their most intimate sympathy 

 must be with the organs of circulation, with the lung, 

 liver, intestine, and skin. As the skin is also an organ 

 of evaporation, so is the antagonism between it and the 

 kidneys of a direct or immediate kind. The skin is the 

 kidneys expanded into a large bladder. These are in 

 turn, just as the lung is, the inverted skin. 



2944. A lung in the reversed animal can do nothing 

 else but expire. It only expels the evaporated matter of 

 the sanguinary system, but takes in none, so as to alter 

 or support the blood. The sexual animal aims at the 

 destruction of the animal. The urinary bladder, as being 

 the remnant of the allantois, and of the primordial kid- 

 neys or sexual branchiae, is simply destined to purposes of 

 expulsion. It is the larynx reversed. Micturition takes 

 place through contraction of the bladder, as does expira- 

 tion by that of the lungs in Reptilia. It is a cough. 



B. FUNCTIONS OP THE ANIMAL SEXUAL ORGANS. 



2945. The sexual functions proper correspond to the 

 sensorial functions, though to these upon an inferior 

 stage. They are sensorial functions, which are simply 

 occupied with the materials of the senses, so that they 

 are vegetative senses. They are a prefiguration of the 

 sense of feeling, taste, and smell. 



1. Functions of the Male Organs. 



2946. The testes secrete semen in the same manner 

 that the salivary glands do their fluid or juice. 



2947. The semen is sexual saliva, and is thus sexual 

 virus or poison. Like the saliva destroys that which is 

 living, so does the semen. The saliva, however, destroys 

 it in order to form a new animal out of the food ; with 

 the same motive the semen destroys it. But both differ 

 in this, that the saliva takes care of the body to which it 

 belongs, while the semen attends to another body, the 

 foetus or fruit. 



2948. The saliva is only the highest condition of the 

 digestive fluid, and is thus a totality merely of the intes- 



