. Nature study and life. Nature study. 66 NATURE STUDY AND LIFE Fig. 22. Egg Raft laid by a Single Mosquito After the snow and ice disappear in spring, let each child keep careful watch for eggs and wrigglers, in any stagnant pools, water pails, tubs, or barrels standing outdoors about his own home, and note the date and bring in specimens in a bottle filled with the water in which they are found. As soon as the wrigglers appear in numbers, arrange an aquarium with a single little fish, preferably a native in the locality, — sunfish, perch, pickerel, pout, bass, shiner, dace, — but a goldfish
. Nature study and life. Nature study. 66 NATURE STUDY AND LIFE Fig. 22. Egg Raft laid by a Single Mosquito After the snow and ice disappear in spring, let each child keep careful watch for eggs and wrigglers, in any stagnant pools, water pails, tubs, or barrels standing outdoors about his own home, and note the date and bring in specimens in a bottle filled with the water in which they are found. As soon as the wrigglers appear in numbers, arrange an aquarium with a single little fish, preferably a native in the locality, — sunfish, perch, pickerel, pout, bass, shiner, dace, — but a goldfish will do. You will not have fed the fish the day before this lesson. Gather the class about the aquarium, and as you pour in a tumblerful of wrigglers ask each to count how many the fish takes for a meal. In another aquarium keep a large quantity of wrigglers. Have the top securely covered with gauze, so that none may escape into the room, and observe from time to time to see them moult their skins, until a number have passed through the larval stages and emerged as adult mosquitoes. Then, at the beginning of the nature-study lesson, put a few drops of kerosene oil on the water and let the children observe the result. Within a few minutes all the wrigglers will have been killed, and as the mosquitoes touch the oily surface they sink down and drown. A mosquito can walk on water, as the children should already have observed in. Fig. 23. Mosquito Pupa (After Howard). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hodge, Clifton Fremont, 1859-. Boston and London, Ginn & Co.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectnatures, bookyear1902
