. The natural history of the farm; a guide to the practical study of the sources of our living in wild nature. Natural history. THE FARM STREAM 39. be seen without a lens and too nvim- erous even to be mentioned here. The water is like another world of life, containing a few forms that are directly useful to p^^ gl. Adult aquatic insects: a, the back swimmer 11Q anH manv mnrf» (Notonecta); &, the water boatman (Corixa); c, a diving ua aiiu ; iiiui c j^^^j^ (Dytiscus); and d. a giant water-bug (Benacus). that furnish for- age for these; containing a few that are noxious when adu
. The natural history of the farm; a guide to the practical study of the sources of our living in wild nature. Natural history. THE FARM STREAM 39. be seen without a lens and too nvim- erous even to be mentioned here. The water is like another world of life, containing a few forms that are directly useful to p^^ gl. Adult aquatic insects: a, the back swimmer 11Q anH manv mnrf» (Notonecta); &, the water boatman (Corixa); c, a diving ua aiiu ; iiiui c j^^^j^ (Dytiscus); and d. a giant water-bug (Benacus). that furnish for- age for these; containing a few that are noxious when adults, such as black-flies, horse-flies and mosquitoes, and a host of other forms, all of interest to the naturalist, but not known to be of practical importance. They are all a part of the native population of the stream and each has a share in carrying on its natural social functions. In the water as on land, green plants represent the great producing class while animals and parasitic plants are the con- sumers. And among the animals there are herbivores and carnivores, parasites and scavengers. One who but casu- a 11 y examines the animal life of the stream is apt to see chiefly carnivorous forms: for these are most in evidence: for here, as else- 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 Needham, James G. (James George), 1868-1956. Ithaca, N. Y. , The Comstock Publishing Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectnaturalhistory, booky
