Abstract
A descr. of the construction, operation. and calibration of a high-pressure apparatus capable of about 104 atmospheres in a volume of about 2 [CHI]10 cm., and which could be constructed for an estimated cost of $500, exclusive of the hydraulic press. The pressure can be detd. within about 5% from the Bourdon gauge on the cylinder of the press. This apparatus should be interesting to biol. laboratories.