162 
LINT AS USED AT THE LONDON HOSPITAL. 
1, 2 or 3 grms. of the normal solution, in order for the tint to be 
the same depth. 
I have examined the three principal kinds of cod-liver oil which 
are found in commerce : — 
1. Dark mahogany color, called brown in commerce. 
2. Amber-colored, called blonde in commerce. 
3. Colorless, called white or English in commerce. 
Each kind was examined three times, operating, as above stated, 
upon 50 grms. To obtain a tint of the same depth as that furnished 
by 50 grms. of the brown oil, I employed 14 grms. of the normal so- 
lution, or 0.0014 of iodide of potassium, and only 12 grms. of the 
same solution for the two other kinds of oil. These three oils contain 
therefore very nearly the same proportion of iodine, which would 
be 1 milligrm. for 50 grms., [l-70th of a grain in 11 ounces] admit- 
ting that no loss occurs in the incineration. 
I have likewise ascertained by experiment, that chloroform re- 
moves completely any free iodine from an aqueous solution. I satu- 
rated 500 grms of water with pure iodine; after having filtered the so- 
lution, I agitated it three different times with 15 grms. of chloroform; 
the third time the chloroform was in every instance scarcely colored. 
A very small quantity of iodine colors pure chloroform a very 
beautiful violet, perfectly similar to the tint of the vapor of iodine ; 
but if the chloroform is mixed with sulphuric ether, even in very 
small quantity, instead of the violet color, it has more the color of 
red wine, or even.of caramel, if there be any quantity of ether pres- 
ent. This character may assist in detecting the sophistication of 
chloroform by ether. — Chem. Gaz, Jan. 15, 1851, from Comptes 
Rendus, Dec. 2, 1850. 
REMARKS ON LINT AS USED AT THE LONDON HOSPITAL, 
(Being a continuation of the paper at page 70.) 
By James Luke, Esq., Surgeon, and Mr. T. H. Tustin. 
I have examined and tested the various specimens of lint w T hich 
you were kind enough to send to me, and, in compliance with your 
request, to state my opinion of their comparative excellence, I beg 
