During the distillation and filtration of the oil, small crystals were
observed at the mouth of the distillation apparatus and also at the
mouth of the funnel after standing over night. In order to separate
this stearoptene (solid portion of the oil) from the elaoptene (liquid
portion) 50 grams of the oil were subjected to a freezing mixture of
ice and salt for several hours. As a result crystals separated in the
form of white flakes. The crystals were thrown into a force filter and
weighed, a total of 3 per cent resulting.