. St. Nicholas [serial]. ipal are,kerosene on thewater, filling upthe stagnant poolswith earth, dis-carding rain-barrels, and putting fish in thesmall ponds to eat the larvae. The dragon-flyand many other water insects feed uponthe mosquito larvae and thus aid us in keep-ing down the numbers of mosquitos. It is to be hoped that some day thenational and the state governments willappropriate large sums of money to com-bat and destroy the mosquito. This hasbeen done in certain sections, as in NewJersey, South Carolina, Havana, Cuba,etc. But it must be done everywhere atonce to be successful, else
. St. Nicholas [serial]. ipal are,kerosene on thewater, filling upthe stagnant poolswith earth, dis-carding rain-barrels, and putting fish in thesmall ponds to eat the larvae. The dragon-flyand many other water insects feed uponthe mosquito larvae and thus aid us in keep-ing down the numbers of mosquitos. It is to be hoped that some day thenational and the state governments willappropriate large sums of money to com-bat and destroy the mosquito. This hasbeen done in certain sections, as in NewJersey, South Carolina, Havana, Cuba,etc. But it must be done everywhere atonce to be successful, else the insects willbe carried from infested to exterminat-ed regions by means of boats, trains, Francis Aaron. MOSQUITO PUP/E. (MAGNIFIED.) The one at the surface on the left isbreathing air through its air-tubes. Theone on the right has completed itstransformation, and the adult mosquitois coming out of the pupa skin througha slit in the back. Its wings will soonexpand and dry, and it will fly away toseek MALE MOSQUITOS. These plumed dandies, though hard to see and find, are commonabout the matted grasses, rank weeds, and bushes in low meadowsand damp woods, never far from water. They subsist mostly onvegetable matter and sweets. igo4. NATURE AND SCIENCE FOR YOUNG FOLKS. 651 WARRIOR MOUND-BUILDERS. We Nature and Science readers have heardof the mound-builders as an extinct race, prob-ably the ancestors of our North American In-dians, whose only traces now left are the rudemounds or tunnels found in various parts ofthe country. But the mound-builders with whom we arenow concerned are warriors as keen and alert onthe war-path to-day as any extinct ones whosename they may bear. Surely they may not beso swift of foot, though they have four pairsof legs and can move backward as well as for-ward. And keen ofeye these fellows aretoo, for their eyes aremounted on movablestalks and can beturned in any direc-tion. The crawfish is amember of the lobsterfamily, and just at
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