SCIENTIFIC SURVEY. 215 



and feet begins to be [periodically] increased in that part of the 

 body which is seated in front of the penultimate ring." Van der 

 Hoeven. 



Entomological Journal. Every collector should keep a daily 

 diary of his captures and observations, noting down every fact and 

 hint that falls under his notice. In this book, commenced as soon 

 as the season opens in early spring, can be placed on record the 

 earliest appearance, the time of greatest abundance, and the dis- 

 appearance, of every insect in any of its stages. Also the descrip- 

 tions of larvae and observations upon their habits, with sketches 

 of them ; though drawings had better be kept upon separate pieces 

 of paper for easier reference. The insects when captured and un- 

 named, should be numbered and refer to corresponding numbers in 

 the note book. At the close of the season one will be surprised 

 to see how much material of the kind has accumulated. He can 

 then make a calendar of appearances of perfect insects and larvae, 

 so as to have the work of the next season portioned out to him ; 

 he will thus know when and where to look for any particular insect 

 or caterpillar. 



Cabinet. After the insects have been thoroughly dried they 

 may be transferred to a chest of drawers of a convenient size, say 

 eighteen by twenty inches and two and one-half inches deep, 

 corked upon the bottom and glazed above, and thus rendered as 

 nearly air tight as possible to keep out Dermestes, mites and 

 moths. The insects should be arranged neatly in rows, labelled or 

 numbered with small pieces of paper attached to the pin. Enough 

 individuals should be selected to illustrate the sexes and variations 

 of the species. Boxes three inches or more deep and twelve by 

 eighteen inches square, rabbetted around the edges rather broadly, 

 are very convenient. Cork in sheets can be had of K. Beeching & 

 Co., Commercial St., Boston. It can be cut in strips or the whole 

 surface covered and fastened down with glue, or better still with 

 tacks. The pith of elder, corn stalk, or felt or palm wood, are 

 substitutes for cork. For transporting specimens for exchanges, 

 they should be pinned securely in boxes, lined with compact 

 cork, and the boxes wrapped in cotton, covered thickly with paper, 

 and then placed in a larger box. 



For guarding with some success against the attacks of insects, 

 the drawers should be provided with camphor or little bottles con- 

 taining spirits of turpentine or benzine, to be kept always full. 



