The various tissues of two species of insects, one cold-hardy and the other not, were found to have melting points between −0.5° and −1.0° C. Because of this uniformity, the relationship between temperature and extent of ice formation, quantitatively worked out for blood of Loxoslege sliclicalis (L.) in a previous paper, may be considered representative of insect tissues in general, except possibly those of insects that withstand freezing.