284 I, Remsen on Sulphosalicylic Acids. 
which with the utmost liberality he put at their service, besides 
aiding them with the results of his own studies. In this way 
he was a center for the study of paleontology, whence radiated 
light in every direction. 
To continue, even after he had gone, the exercise of his 
generosity toward all students, he has desired that his collec- 
tions—certainly unique—should be always at their disposal, 
and to this end he bequeathed them to the Gallery of the 
School of Mines. 
The memory of our excellent member will always be held 
in — among the geologists and paleontologists of the 
wor 
Art. XXX.—On Isomeric Sulphosalicylic Acids; by IRs 
EMSEN, 
ulphosalicylic acid was originally prepared by Cahours,* 
2 Pon a Tes ha 
then filtered off from excess of chalk and precipitated oy perth 
treated with 
taining the potassium salts, was evaporated down to a compara 
tively small volume. On now being allowed to cool slowly, # 
* Ann. Ch, Phys., [3] xiii, 92, + Ann. Ch. Pharm., ciii, 39. 
