94 



GENERAL ANALYSIS. 



FIG. 83. 



FIG. 84. 



Fig. 83 represents one form of capillary network, very much magnified. 

 Fig. 84, part of a frog's foot, magnified ; dotted lines, capillary net- 

 work ; A, arteries ; V, veins ; arrows show direction of current. 



341. THE VEINS are the names of tubes, continuous 

 with the capillaries, that gradually unite together and 



lead their contents into the Heart. 



FIG. 86. 

 FIG. 85. 



Fig. 85, a section of Skin ; 6, small branches of veins connecting with 

 capillary network and uniting to form the large branch, 5. 



Fig. 86 represents the Veins of the Spleen uniting to form the trunk, 1. 



342. THE HEART is a muscular pouch or pump 

 that receives its contents, on one hand, from the veins, 

 and, being furnished with a set of valves, throws out at 

 each stroke what it receives, meantime, into 



Describe Fte. S3. Fig. 84. 841. What are -? Describe Fig. 85. Fig. 86. What 

 is tte subject of PL 5 ? 842. What ia - 1 



