'C4 



DETAILED SYNTHESIS. 



1119. THE LACTEAL 

 HOOTS ARE CONSTRUCTED of 



membrane only, but to this 

 are added a lining of cells 

 and a covering of sinewy 

 tissue to form the tubes. 



1120. THE LACTEALS 

 TAKE UP, among other sub- 

 stances, the fat, that gives 

 their contents the color of 

 milk ; hence the name, lac- 

 teals. Their contents are 

 called chyle. 



1121. THE CHYLE TAK- 

 EN UP BY THE LACTEALS IS 



MODIFIED by their action 

 and that of the glands, so 

 that by the time it reaches 

 the veins it has a pinkish 

 cast, but its light color can 

 be traced in the Blood, into 

 the lungs, after which no 

 farther trace is perceptible 

 to the eye, though it is 

 abundantly evident if 



properly sought. 







SECTION IX. 

 ELIMINATORY ORGANS. 



Kidneys. 



1122. THE KIDNEYS 

 are two similar glands, of a 



dark brown color, about four and a half inches in length 

 by two in breadth and one in thickness, of the form of 



Describe Fig. 241 (see PL 5*). 1119. How are ? 1120. What do ? 112LHow 

 |s-f jm. Whataie ? Where? 



