Show attig Batter flie recent experiments in the aepli application 31 3 1 of both heat and cold to the eggs egg larvae and pupae of butterflies have hate produced very interesting results in this manner specimens of some varieties of butterflies have been made to imitate in color and form other bacr varieties found in nature the application of heat beat causes a hastening of growth and development aaril ciol als of moisture and dryness also produce perceptible effects on the growth and markings of the insects the general results of the experiments go to B show that by the application of artificial conditions of temperature some of 1110 ia natural forms peculiar to certain seasons or to certain localities may is 0 O I 1 imitated and forms may also be l juned which occur only in exceptional ases and from time to time in nature moreover through this method of cultivation ti forms of butterflies can bo ba produced which do not at present preen oc ur in nature but which it is thought thou hr nay may have existed upon the earth at ome pas past epoch in its history or ray ayt ae P destined to appear through th tha gradual unfolding of natural processes in the future |