C02 Snow Recently, H. Bruce Land UI describes [J. CHEM. EDUC.,50.18 (1973)l an easy way to obtain small amounts of carbon dioxide "snow" for cooling baths. Essentially, the method he describes was in common use during my graduate school days (1925-281. althaueh I think the nrocedure then was better. The tank was nlaced in an inclined rack so that on onenm i the valve, ltgurd cnihon dmxide l i f t the tank Hy tying a canvas bag arouni the nozzle, the " s n o d waseasily t i l t k i frrm the gds. Further, n r rncountrrrd nu lmttatruns tu the amount prepared in a unit of timr except the a m uf the hag. This operation was a camman lecture demonstration before Dry Ice became a common article of cornmeice. The "snow" had definlte advantagesover the "ice" as Dr. Land indicates
University of South Florida Tampa, Florida 33620
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