LETTERS TO BROTHER JOHN. 43 



LETTER II. 



224 Blackfriars 



15th Feb. 1836. 

 MY DEAR JOHN, 



IN my last Letter, I told you that every part of 

 the body is composed, almost entirely, of a delicate 

 network, formed by the interlacing of minute arte- 

 ries, veins, nerves, and absorbents ; and I endea- 

 voured to give you a clear notion of the manner in 

 which the arteries and veins are distributed how 

 they arise, and how they terminate the differences 

 which distinguish veins from arteries and also the 

 differences which characterize the two kinds of 

 blood which they contain and convey. I have now 

 to speak of the absorbents and nerves ; and explain 

 the manner in which they are distributed through- 

 out the entire body, so as to perform their share in 

 making up that wonderful tissue, of which our 

 organs consist. 



There is, arising from every point of your body, 

 a countless number of little vessels, which are at 



