307 Mr. E. E. Henderson and Prof. E. H. Starling. [Nov. 23, 



After the determination of the intraocular pressure, the animal was killed 

 by opening its heart, and the inflow of serum and saline fluid respectively 

 observed, first under the normal intraocular pressure, and then under raised 

 pressures. 



The results of two such experiments are given below. It will be seen that 

 there is a marked difference in the rate of filtration of the two fluids, that of 

 serum being, as one might predict, very much slower than that of saline.* 



Experiment 1. Dog, A.C.E. Morphia. Curare. Vagi cut. 



Experiment 2. Cat. Ether, morphia, curare. 



* Although serum niters more slowly than normal intraocular fluid or saline, the 

 difference is not sufficiently great to cause any marked variation in the intraocular 

 pressures on the two sides. One cannot, therefore, in view of these observations, ascribe 

 any large part in the production of any form of glaucoma to possible differences in 

 the composition of the aqueous humour which might be determined by inflammatory 

 conditions of the blood vessels. 



