Crypt acanth odes (kriptakanthodez)

[NL., A poured into one globe and boiled to expel the air, and Crypt a can tho didæ (kripta-kan-thod'i-dē), n. while boiling the apparatus is hermetically sealed. When cool, the pre ure of the included vapor is reduced to that due to the temperature of the surrounding atmosphere. The empty globe is then surrounded by a freezing-mixture, the vapor is condensed, and rapid evaporation takes place from the other globe, which is soon frozen by the lowering of its temperature.