98 
IOWA ACADEMY OF SCIENCES. 
under the same pressure. The yield was one gram of the* 
ether for every gram of the cresol used. On crystallizing 
several times from alcohol it was completely purified and 
analysis yielded the following results: 
Carbon. Hydrogen. Nitrogen. 
Calculated for C13H11NO3 ..68.04 4.83 6.11 percent. 
I ....68.12 4.75 6.28 per cent. 
II ....68.20 4.77 6.32 per cent 
The compound melts at 49 0 C. It distills with partial 
decomposition at ordinary atmospheric pressure. It is not 
volatile with steam. It is very soluble in hot alcohol,, 
from which it crystallizes out in beautiful sulphur yellow,, 
and apparently monoclinic crystals of sufficient size to be 
easily measured with the goniometer. It has no taste, but 
feels like sulphur when taken into the mouth. It is very 
soluble in ether, acetic acid, chloroform, benzene, toluene, 
aniline, nitro benzene, ethyl acetate, acetone, benzoyl chlo- 
ride, brom benzene and carbon disulphide. It is sparingly 
soluble in petroleum ether, and insoluble in water and 
hydrochloric acid. It is dissolved by concentrated sul- 
phuric acid with slight charring and by concentrated nitric 
acid with apparent oxidation, brown fumes being given off. 
2-Mtro phenyl ether-4 -carbonic acid— N0 2 .C 6 H 4 0C e H 4 .- 
COOH This acid was prepared by dissolving the above 
mentioned ether in glacial acetic acid (which had been 
prepared by distilling Kahlbaum’s glacial acetic acid from 
chromic acid) warming on the steaming water bath and 
adding very slowly a cold solution of chromium trioxide 
in glacial acetic acid until a test portion failed to become 
turbid upon diluting with a large amount of a weak solu- 
tion of sodium hydroxide. To accomplish this, three or 
four times the theoretical quantity of chromium trioxide 
was necessary. To a portion of the ether many times the 
theoretical quantity of chromium trioxide sufficient for oxi- 
dation was added and no trace of the acid could be found 
in the solution. The acid- itself had thus probably become 
completely oxidized. When the oxidation of the ether was 
judged to be complete, the acid was precipitated from the 
acetic acid solution by diluting with a large amount of 
