Marshall. ] 488 [April 5, 
Unless the alcohol which I employed as a solvent for the compound 
caused the decomposition of the latter, Iam at a loss to know to what my 
failure to obtain it should be ascribed. 
Both the mono and dichlor acids were acted upon by benzoyl] chloride, 
but as I have not yet ascertained anything positive in regard to the result- 
ing compounds, statements of their properties, &c., are withheld for the 
present. 
DICHLORSALICYLAMIDE. 
C.785 Cl, OB OANA. 
Fusing point 209° C. 
The same course was pursued here for the obtainment of this compound, 
as has already been described under the heading of Action of Ammonia 
upon methylmonochlorsalicylute. The heating in a sealed tube was con- 
tinued through twelve hours. The temperature never extending above 
100° C. The contents of the tube removed and evaporated, deposited 
small nodular crystals. These upon recrystallization became perfectly 
white in color, but retained the form of the nodules, which appeared to be 
composed of densely united needies. The compound dissolves readily in 
alcohol. The pure compound fused at 209° C. It was not subjected to a 
combustion. 
The fluorescence that was exhibited when alcoholic ammonia was poured 
upon the methylmonochlorsalicylate, was not near as beautiful as that ob- 
served in this case. Heat caused its disappearance. 
By comparing the results of this investigation with similar derivatives of 
ordinary salicylic acid, the evident stability shown by most of the ethers 
of mono and dichlor salicylic acids, will not fail to be observed, and the 
cause for this seems to be due to the presence of negative chlorine, since 
this apparent stability shows itself from the moment of its introduction. 
Of the four ethers obtained from the monochlor acid, two, the ethyl and 
isobutyl derivatives appear to lack the decided crystalline character ex- 
hibited by the rest. With the dichlorine compounds the acetyl is the only 
one that has indicated any signs of non-stability. A comparison, too, of the 
salts of the different acids, shows the influence exerted by the presence 
of chlorine. All are fine crystalline compounds. 
