SYSTEMATIC ANALYSIS OF ORGANS. 137 



518. THE SERUM is of three varieties : 1st, the com- 

 mon ; 2d, the sy no vial, that lubricates the joints or bur- 

 sse, is a little more viscid, and in some of the joints has 

 an appropriate arrangement for supplying it in large 

 quantities ; and 3d, the tear-fluid, that has a small por- 

 tion of salt to make it beautifully transparent, and is 

 supplied by an organ for the purpose. 



519. THE GENERAL FLUIDS are of three kinds, Flesh- 

 juice, Lymph, and Blood. 1 



520. FLESH-JUICE is required by all the organs to. 

 keep them in a proper condition of pliability, etc. 



521. LYMPH, or white Blood, is a slightly-colored 

 watery fluid, containing an immense number of white 

 cells, from which it is supposed the red cells of the Blood 

 are formed. 



522. LYMPH EXISTS in all parts of the Body except 

 the Brain and Nerves. Its rationale is not understood. 

 The Lacteal fluid is considered as one form of Lymph. 



523. BLOOD, the common necessity and common 

 result of all the fluids and all the organs, is everywhere 

 found : its water serves as a solvent and a vehicle to 

 whatever is thrown into it ; its living cells work as they 

 circulate ; its character is constantly changing, yet ever 

 the same, owing to the wonderful provision that the ac- 

 tion of one part of the Body is ever balancing the action 

 of another; and the velocity of its current is such that 

 its entire resources are every few moments present to 

 every minute portion of the Body. It equalizes the heat 

 of the Body by swiftly coursing through every part, 

 gathering heat from one and distributing it to another ; 

 and when the whole Body is too warm, it pours out its 

 watery portion upon the surface of the skin to be freely 

 evaporated, and thus carry off the surplus heat ; or, if 

 the Body is too cool, it yields a portion of its water to 

 the kidneys. 



518. How class -? 519. How class ? 520. What said of? 521. What is ? 

 522. Where does ? 523. What is ~ ? 



