448 NUTRITION. 



Pancreas 3'00 grammes, or when dry 0' 66 grammes. 



Salivary glands 1-13 0'23 



Heart 4-22 . 0*94 



Aorta and Venae cavse.... 1*34 0'31 



Mesentery, with its fat.... 38*16 21'60 

 Eyes (including muscles 



and fat) 14*70 4*50 



Larynx and trachea .... 2*28 0*75 



Bladder .... .... 0'97 0'23 



Testicles 0*41 0*09 



Blood (which escaped 



during dissection) .... 60*36 



1000-00 



Hence in 100 parts of this animal there were contained 32*039 

 of solid materials. Schmidt employs these determinations in order 

 to calculate the amount of the different elements, of the water, and 

 of the salts in the body of the cat, and it follows from his calcula- 

 tions that in every kilogramme's weight of the cat there are contained 

 about 679*61 grammes of water, 148*72 grammes of carbon, 20*19 

 grammes of hydrogen, 35*45 grammes of nitrogen, 54'78 grammes 

 of oxygen, 2*43 grammes of sulphur, 1*88 grammes of sodium, 

 1*51 grammes of chlorine, 51*02 grammes of earthy phosphates, 

 including about 0*4 of a gramme of iron, and 4*41 grammes of 

 other salts, including 2*] 2 grammes of phosphoric acid. 



This calculation gains additional support from the circumstance 

 that, as follows from the data formerly given, a dog fed with flesh 

 gives off 2*25 grammes of water by perspiration and respiration, 

 and 5*97 grammes by the urine and faeces (and, therefore, on the 

 whole 8*22 parts) for every 100 grammes of water which it conta ; ns, 

 while 23*25 grammes are effused into the intestine with the intes- 

 tinal juice. Hence the intermediate circulation of the water towards 

 the intestine is far more considerable than its final excretion, and 

 amounts to almost the fourth part of the whole quantity of water in 

 the body. If, on the other hand, we compare the aqueous excre- 

 tions with the amount of water in the blood, and fix the latter at 

 100, 27'9 parts are entirely removed from the body in twenty-four 

 hours, while 79*0 parts are effused into the intestinal canal. Of 

 every 100 parts of salts in a dog fed with flesh there are in twenty- 

 four hours 5*3 parts given off to the external world, while 8*5 parts 

 are effused with the digestive fluids over the surface of the intes- 

 tinal canal; while of 100 parts of blood-salts 21*2 parts are com- 

 pletely excreted in twenty-four hours, and 34*1 parts conveyed into 



