110 ANALYTIC SECT. XII. 
lymphatics of the testicle resume their morbid 
contracted state, and the serum again accumulates 
in the tunica vaginalis. 
ccLx1. Serous effusions again proceed’ from 
increased action of the extreme arteries, and oceur 
most frequently in inflammation of the serous 
membranes. The efficacy of bleeding and digitalis, 
in lessening the action of the arterial system; is so 
generally acknowledged, that it would be super- 
fluous to bring proof in support of their utility. 
ccLxu. Whenever the expansibility- of the 
’ exhalants rises above that of the absorbents, serous 
effusions take place; the same occurrence happens 
when the expansibility of the absorbents falls 
below that of the exhalants. Thus, on the 
equality of irritability in the extreme arteries, 
veins, and absorbents, depends the equation and 
distribution of the fluids in those tubes; and the 
superior expansibility of the veins and absorbents, 
when effusions do occur, tends to carry them off, 
and re-establish the equality of the circulation. 
ccLxiu. The lymphatics proceeding from an 
abcess have been found replenished with pus in 
place of lymph. The absorption of mercury and 
other medicines from the skin, show that they 
are capable of receiving a variety of substances. 
ccLxiv. Upon the whole, it appears certain, 
that when the orifices of absorbents in contact 
with a liquid, expand, part of it must rush into 


