292 On Cutaneous Absorption. 



The different portions were suffered to stand unagitated 

 until a separation had taken place. The serum was 

 then carefully decanted off. No difference appeared in 

 the two portions ; each was opaque, and of a pale-red 

 colour, slightly tinged with yellow. The sulphat add- 

 ed to them produced a very slight change, but I am 

 not positive that the purplish-brown appeared at all. 



In all the above experiments, the urinary bladder was 

 emptied immediately before I entered the bath. The 

 urine was uniformly pale, and, tested with the sulphat, 

 exhibited none of the purplish tinge. In the first, se- 

 cond, and fourth experiments, the bath, by the occa- 

 sional addition of hot water, was kept at a comfortable 

 temperature. I had no thermometer (it is said to be 

 unphilosophical to experiment without a thermometer) ; 

 but, fortunately, the results of these experiments have 

 shown that very nice attention to temperature was not 

 necessary. 



The pulse was a little accelerated soon after I entered 

 the bath, and retarded before I left it. In the first, se- 

 cond, and fourth experiments, I felt a small degree of 

 languor, and slight head-ache for two or three hours 

 after bathing. During this time the pulse Mas in- 

 creased in frequency, not falling below seventy, and in 

 one instance going as high as eighty-four in a minute. 



I invariably took a full meal after each experiment ; 

 but, during the four days in which I was engaged, I 

 avoided eating or drinking coloured substances. In 

 the three first experiments I avoided friction ; in the 



