have a purely (esthetic and scientific interest. The very young larva are black m color roughened with brownish black tubercles. When full grown the body is smooth and greenish thickening toward the reddish brown head. On the dorsal edge of the first segment is a raised yellow fold from which the larva protrudes when disturbed a fleshy yellow forked organ giving off a very disagreea ble odor which is the means of defense of this otherwise helpless larva against its vertebrate or other enemies Other markings peculiar to the larva are a raised yellow fold on the hinder portion of the fourth segment bor dered with black and an eye-like spot inclosed with black on either side of the third segment. The larva transforms to a clarnialis in the early part of August fastening itself for supped to fence posts or other objects by the help of a silken band around the middle of the body. This chrysalis changes to a dull brown color and in this state the insect hibernates until the following spring when the butterfly is disclosed. The first specimens of the butterflies appear during May and become more abund ant daring June and July depositing their nearly round dark green eggs singly on the leaves of the food plants. (5322) C. E. D. asks : 1. Is there any process chemical or other by which illustrations half tones or even woodcuts may be transferred onto white paper 1 A. We do not think there is any very satisfac tory way of accomplishing this. You might however try saturating the print with naphtha and applying it to the plain paper under very heavy pressure leaving it for some hours to dry. 2. Would like to know the best method of repairing a flute of grenadine wood that has become cracked sufficiently to slightly injure the tone. A. Probably the best method of repairing the flute will be to fill .the crack with a cement composed of gutta percha pitch and shellac equal parts. 3. Please to give directions for making leaf photographs. -1. If you refer think you will succeed by s
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