2426
JOURNAL OF CHEMICAL EDUCATION
SODIUM CHLORIDE CRYSTALS PROM ON GLASS SOLUTIONEVAPORATED SLIDE
DECEMBEE, 1931
POTASSIUMCHLORIDECRYSTALS SOLUTION EVAPORATED ON SOLID S H O W ~ORIENTAC SODIUM CHLORIDE,
PROM TION
PWnSSruM Iouroc CRYSTALS PROM
KI[FE(CN)~ICRYSI~ALSFROMSOLUTION sOLUTION E~~~~~~~~~ EVAPORATED ON GLASSSLIDE
ON
lYIICA
(MUSCOVITE), SHOWING ORIENTATION
M a n y of t h e crystals which t h e author has photographed were made A difference was noticed in m a n y cases when t h e initial concentration of t h e solution was changed.
by evaporating a drop of solution on a grease-free glass slide.
. . . .
. .
I wish to add a word of apprecintion to Dr. C. A. Sloat, professor of fihysical chemistry, Gettysburg College, who has permitted me the use of his laboratory and materials, and who has encouraged me at all times.
Anesthetic Also Raises Blood Pressure. A synthetic chemical discussed a t the American Chemical Society meeting has anesthetic power approaching that of cocaine and a t the same time it causes a small rise in blood pressure. Its chemical name is benzoic ester of phenylpropanolamine, and it was made by Walter H. Hartung, James C. Munch, and Ernest B. Kester, of Baltimore, Md.-Science Service
