44 MR. A. J. T. JANSE : HOW TO COLLECT A^^D 



30-50 candle-power. E'er many years I have collected with 

 such a light and with fair results, but it is easily beaten, 

 even candle-])ower for candle-[)Ower, by the incandescent 

 burner. These are made of various t3^pes, but I find the 

 paraffin incandescent light the most eifective, economical, 

 and easiest to handle of the lot (fig. 9). The lamp should, 

 however, always be of a type that has the mantles enclosed, 

 and this is not often the case in such lamps as are sold for 

 use in the house. (Information about the best type of lamp 

 can always be had from me.) Acetylene light I find less 

 attractive to moths than any other light and, though the light 

 may be brilliant, it never comes up to expectation in attracting 

 moths. Electric light is, of course, out of the question, 

 as we can seldom get this in a locality suitable for collecting. 

 Go with your light where there is a good deal of vegetation, 

 yet where the light can be seen from a good distance and 

 where there is sufficient shelter from wind. Wind is also 

 fatal to this kind of collectino-, wdiereas rain often assists 



o - 



more than one would expect. The open spaces in woods, 

 the side of a wooded road_, and the slope of a hill are most 

 promising places, though often a great variety of smaller 

 things may be had from grass-covered land. 



Place your light on a table that is covered with a white 

 cloth, as on this the moths will often settle for a moment ; it 

 also reflects the light, and so makes the most of the candle- 

 power produced. The more candle-power the more success, 

 I think. 



Have two bottles with you, covered with a glass-bottomed 

 box as in the sketch (fig. 2). Have also at least two additional 

 boxes in reserve. When a moth settles for a moment on the 

 cloth, quickly place the box ovei* it, insert a stifi' card (an old 

 post-card will do) between the table and the box and place 

 box and card bodily onto the oi)en killing-bottle. By with- 

 drawing the card, the insect will drop after a little while into 

 the bottle without being touched and, if the bottle is poisonous 

 enough, it will be killed without even a scale coming off. 

 If such boxes cannot be had, a dry tumbler may be used, as 

 long as it fits the bottle. Suitable glass-bottomed boxes of 



