198 ON GENERATION. 



this abundant thicker renal secretion is seen ; it is conspicuous 

 in serpents and other ovipara, particularly in those whose eggs 

 are covered with a harder or firmer membrane. And here, too, 

 is the thicker in larger proportion than the thinner and more 

 serous portion ; its consistency being midway between thick 

 urine and stercoraceous excrement: so that, in its passage 

 through the ureters, it resembles coagulated or inspissated 

 milk ; once discharged it soon concretes into a friable mass. 



EXERCISE THE EIGHTH. 



Of the situation and structure of the remaining parts of 

 the fowl's uterus. 



Between the stomach and the liver, over the spine, and 

 where, in man and other animals the pancreas is situated; 

 between the trunk of the porta and the descending cava; at 

 the origin of the renal and spermatic arteries, and where the 

 cseliac artery plunges into the mesentery, there, in the fowl 

 and other birds, do the ovary and the cluster of yelks present 

 themselves ; having in their front the trunk of the porta, the 

 gullet, and the orifice of the stomach : behind them, the vena 

 cava and the aorta descending along the spine ; above the liver, 

 and beneath the stomach, lie adjacent. The infundibulum, 

 therefore, which is a most delicate membrane, descends from 

 the ovary longitudinally with the spine, between it and the 

 gizzard. And from the infundibulum (between the gizzard, 

 the intestines, the kidneys, and the loins,) the processus uteri 

 or superior portion of this organ descends with a great many 

 turnings and cells (like the colon and rectum in man), into the 

 uterus itself. Now the uterus, which is continuous with this 

 process, is situated below the gizzard, between the loins, the 

 kidneys, and the rectum, in the lower part of the abdomen, 

 close to the cloaca ; so that the egg surrounded with its white, 

 which the uterus contains, is situated so low that, with the 

 fingers, it is easy to ascertain whether it be soft or hard, and 

 near the laying. 



The uterus in the common fowl varies both in point of size 



