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NATURE-STUDY REVIEW [15:7— Oct., 1919 



The insects should be left on the spreading board at least three days; 



and when the board has insects on it, it should be kept in a box where 



the museum pests and mice cannot get at it. 



Sometimes when the 

 moths are not spread 

 soon after being killed 

 they become so stiff that 

 the wings cannot be 

 moved without breaking 

 them. In such cases 

 the insects should be 

 put on some paper in 

 a jar which has some 

 wet sand in the bot- 



2. A cross section of spreading hoard in 

 front of the cleat "d" in Fig. i 



tom and which can be covered tightly. The air in such a can is so moist 

 that in two or three days the insect will become limber and may be spread 

 with ease. 



The Riker Mount for Moths 



Probably the most attractive and pleasing manner of preserving specimens 

 of Moths is by placing them in Riker mounts. The process is a very easy one. 

 The mount consists of a shallow pasteboard box with a glass plate fitted into 

 the cover. On the back is a place for the name of specimens., locality and 

 remarks. The box is filled with a layer of white cotton batting. To mount, 

 simply remove the cover, place the specimen, which has previously been 

 spread, carefully on the cotton, replace the cover and then seal the box with 

 gummed paper. Lantern slide binders serve the ptupose well. It is necessary 

 to cover every crevice between the box and cover to keep museum pests out. 

 These mounts may be made doubly attractive by adding a bit of the pressed 

 plant that the specimen is found on or about. Often the male and the female 

 are placed in the same mount. These mounts may be obtained in different 

 sizes. The picture of the two Cynthias on page 273 was photographed in a 

 Riker mount 



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