tarletan, preferably green in color, or bobbinet. The latter is more durable though 

 somewhat heavier than tarletan. The bag of the net ought to be about three times 

 as long as the diameter of the ring upon which it is placed. It is well, after the net 

 has been sewed upon the ring, to cover it with a band of stout dark-colored muslin, 

 as otherwise the edge of the bag surrounding the ring is apt to become speedily 

 worn and torn. 



The collector having provided himself with a net for capturing insects must 

 also provide himself with one or more collecting jars. It is well to have several of 

 these of a size convenient for carrying in the pockets. For large specimens a larger 

 jar is required; for small specimens a smaller receptacle is better. The larger jar 

 should have the mouth about two and one half or three inches in diameter. Wide- 

 mouthed glass phials an inch and a half in diameter serve best for the smaller re- 

 ceptacles. The stopper of the larger jar should be of ground glass, of the smaller 

 jar of good cork. Jelly tumblers or glasses with tin tops make good collecting jars. 

 In preparing the jar for use place a few lumps of cyanide of potash about the size 

 of a filbert at the bottom; then put in a little clean sawdust to keep the pieces of 

 cyanide from rattling about; over the lumps of cyanide paste a sheet of strong white 

 paper perforated with a multitude of holes. In doing this the writer has resorted 

 to a simple method, which is explained in the diagram on Plate D, Fig. 4. A piece 

 of paper is placed under the jar and a circle the size of the inside of the jar is traced 



42 



