There are moths that show a decided preference for large trees. These may be seen hovering about high branches during the evening twilight, and sometimes even in sunshine. In many such cases the chance of a capture seems hopeless, but occasionally one will descend so low that a watchful collector is able to secure it by a sweep of the net. If at any time you are in a locality by day where you suspect the presence of certain species of moths at rest among the upper branches of trees, such branches should be beaten if possible to dislodge the insects they may shelter. A long stick will often serve this purpose well, and, failing this, a few stones thrown among the branches may prove effectual. In the case of small and rather slender trees, a kick against the trunk will set the whole in vibration sufficient to surprise all the lodgers; and the same effect may be produced with larger trees by giving each a good sound blow with a mallet or some other suitable implement. This or any other plan of 'beating' for moths is much more conveniently worked by two collectors together than by one alone; for one engaged in beating the herbage cannot be at the same time fully on the alert with the net. If two persons are together, one may take the lead, armed with the beating stick only, while the other, only very slightly in the rear, is always ready to strike. We have said that butterflies should always be killed in the field, but this plan is not so universally adopted with moths. Many collectors carry a large supply of pill boxes when going out for the latter and then take as many as they possibly can by boxing them direct in these. This method of 'pill-boxing' is very simple in the case of the lazy and soundly sleeping moths. It is only necessary to hold the open box below the insect, and then cause it to fall by pressing the lid down gently on it from above. Many of the moths so caught will remain quiet in the boxes and can be taken home alive without much fear of damage. All may then be killed at the same time by packing all the pill boxes in some vessel of sufficient accommodation, and shutting them in with a little chloroform, ammonia, benzole, or other suitable poison. The vapour will soon find its way through the pores of the pill boxes, but, in order to make its action speedy, each one should have a few perforations in the lid. Whatever advantages this method may give to the collector who works at night, when the process of pinning would be more or less tedious, there is no necessity for its adoption during the day. The large number of pill boxes required is certainly far more bulky than the single collecting box that would accommodate all the day's captures; and although most of the insects boxed alive may be none the worse for the shaking they get, and may not damage themselves by fluttering in their small prisons, yet there is often a little loss on this score.