36 REPORT OF NEW JERSEY STATE MUSEUM. 
out the fact that where nature has produced breeding places 
she has also established checks, and it is for us to enable the 
killies to help us out on the marshes. 
One box is devoted to the various materials that have been 
and are yet being used as larvicides or destroying agents 
against any stage. 
Another box shows those articles that have been used as 
repellants to either drive or keep away the adults. 
Four boxes are devoted to the insect enemies of the mos¬ 
quitoes—Dragon flies, Diving beetles, Water-bugs and the 
like, and it is brought out hereby that in permanent bodies 
of water where other aquatic life flourishes, the mosquitoes 
are unable to maintain themselves. Besides the adults, which 
are pinned, the larvae of these'beneficial species are shown in 
alcohol in vials, prepared as are the fish vials already referred 
to. 
The remainder of the boxes are devoted to mosquitoes 
strictly speaking, and some 1-5—20 species are shown in great 
detail. Usually an entire box is devoted to one species and 
the life cycle is shown as completely as possible by specimens, 
drawings and labels. The early stages are always shown in 
alcohol and in vials so prepared as to bring out the details 
most clearly. The adult insects are shown pinned and in 
alcohol. The drawings bring out details not readily visible 
in the pinned specimens, and the labels tell where the insects 
breed and what their general habits are. 
Returning to the transparencies they are planned to show 
by direct photographs, actual conditions; some of them in 
communities that have done nothing; some of them where 
active work was in progress. The second series shows what 
must and can be done by the localities suffering from the mos¬ 
quito pest. 
The whole thing is an illustration of the fact that just when¬ 
ever the State of New Jersey really decrees war against the 
insects and supplies the necessary ammunition, the actual 
wiping out will prove easy along lines and plans already 
worked out in great detail. 
The collection contains as follows 
Boxes or trays, containing specimens. 26 
Salt marsh tray.. 1 
