154 DISEASES OF THE COTTON PLANT. 
of about one hundred and twenty degrees, instead of one 
pane, as in common lanterns. These panes can be slipped 
in and out, so as to leave a space open between them, 
larger or smaller as may Ije desired. A lamp is placed in 
the centre of the bottom, protected from insects and wind 
by a common glass chimney, which protrudes through a 
hole in the top. All the bottom of the box inside of the 
glass having been previously cut away, excepting a circular 
place on which to put the lamp, it is then deposited on a 
vessel or barrel covered with cloth, having ^n aperture 
cut in it corresponding with the bottom of the box, and 
the vessel beneath, containing molasses, or some other ad- 
hesive substance. The insects which may be flying about 
will be immediately attracted by the light, and approach 
the angle of the panes until they shall have entered the 
aperture, when, once within, and not being able to fly out 
again, they will come in contact with the heated glass 
chimney, and thus be precipitated into the vessel beneath, 
in which they will perisli. 
Another plan, which it is hoped may, upon experiment^ 
be found applicable to the enemies of the cotton plant, has 
lately been reported as having proved efficient as a means 
of destroying the tobacco-worm in Florida. This worm is 
the larva of a large moth commonly known by the name 
of the " tobacco-fly " {Sphynx Carolina), which is in the 
habit of feeding upon the nectar, or honey, contained in 
flowers, over which it may often be seen in the evening, 
poised in the air in a manner similar to that of the hum- 
ming-bird, mating a buzzing noise with its wings, and 
busily employed in extracting the sweets by means of its 
long trunk. 
As it had been previously observed that these moths 
ai-e particularly fond of the Jamestown weed {Datura 
