210 THE HOUSE 1 LIVE IN. 



human body seem to be secreted without the 

 help of glands. They appear to be made di- 

 rectly from the blood vessels. How, we do 

 not know. Perhaps they ooze through the 

 sides of the vessels. 



Here, perhaps, in the vessel, is blood ; there, 

 outside of it, but not a hair's breadth from it, 

 is gastric juice, or some other entirely new 

 substance. Here is simple chyme or chyle ; 

 there, at the distance of a hair's breadth, is 

 chyle or blood. Here is chyme or chyle made 

 of common food, with no sulphur, or iron, or 

 nitrogen in it ; there, perhaps not the twelfth 

 part of an inch distant, is a fluid made from 

 this very liquid, containing nitrogen, sulphur 

 and iron ! 



By what secret laws of the Creator have 

 these little vessels this wonderful power ? By 

 what mysterious process can they change in 

 the twinkling of an eye a bland milky sub- 

 stance, made from simple bread, or milk, or 

 potatoes, into iron or sulphur ? But so it is. 

 Well, indeed, might David the Psalmist express 

 wonder. 



