624 



FUNCTIONS OF ANIMALS. 



Hay, 

 Oats, 



Dry. 



14-26 Ibs. 



+ 

 -f 



Urine, 

 Faeces, 



Dry. 



0-339 Ibs. 

 778 



+ 



8-119 



Water. 



2-28 Ibs. 

 0-73 



266-11 

 269-12 



Water. 



2-589 Ibs. 

 23-67 



26-259 



The ultimate analysis gave, 



Carbon, 



Hydrogen, 



Azote, 



Oxygen, 



Ashes, 



14-259 4-140 0-337 7-77 18-219 8-107 

 The very same inferences may be drawn from this experiment 

 as from that of the cow. A good deal of the carbon and hydro- 

 gen must escape by the lungs and skin. The azote thrown out 

 is rather less than that in the food, but the difference is so small 

 that it may be owing to errors in the experiment The water 

 taken into the stomach of the 



Cow, . . 157-965 Ibs. Given out 36-98 Ibs. 



Horse, . . 266-11 26-259 



Hence, in twenty-four hours the quantity of water given out by 

 respiration and transpiration must have been in the 

 Cow, . . 120-985 Ibs. 

 Horse, . . 239-86 



This is a much greater quantity than we were prepared to ex- 

 pect. 



Dr Goodwyn has shown very clearly that black blood does not 

 stimulate the heart to contract ; but that red blood does.* 



The blood is a fluid of so complex a nature that it is not easy 

 to ascertain the changes produced in it by exposure to different 

 gases out of the body ; and even if that could be done, we have 



See the fourth section of his work on the Connection of Life with Respiration. 



