. Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets. Nature study. Insect Study 3«i need for breathing, and they also take up from the water the poisonous carbonic acid gas given off from the bodies of the animals. 1. The aquarium should be kept where there is a free circulation of air. 2. If necessary to cover the aquarium to prevent the insects, like the water boatmen and water beetles, from escaping, tie over it a bit of mos- quito netting, or lay upon the top a little square of wire netting used for window screens. 3. The temperature should be ke
. Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets. Nature study. Insect Study 3«i need for breathing, and they also take up from the water the poisonous carbonic acid gas given off from the bodies of the animals. 1. The aquarium should be kept where there is a free circulation of air. 2. If necessary to cover the aquarium to prevent the insects, like the water boatmen and water beetles, from escaping, tie over it a bit of mos- quito netting, or lay upon the top a little square of wire netting used for window screens. 3. The temperature should be kept rather cool; it is better that the water of the aquarium should not be warmer than 50 deg. Fahrenheit, but this is not always possible in the schoolroom. 4. If any insects or animals die in the aquarium they should be removed at once, as the decomposing bodies render the water foul. 5. To feed the animals that live upon other animals take a bit of raw beef, tie a string to it and drop it in, leaving the free end of the string outside of the jar. After it has been in one day, pull it out; for if it remains longer it will make the water foul. 6. As the water evaporates it should be replaced with water from the pond. References—The Fresh Water Aquarium, Eggeling and Ehrenberg; Insect Life, Comstock; The Brook Book, Miller; Nature Study and Life, Hodge- The Home Aquarium, How to Care for It, Eugetie A humble, but useful, 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 Comstock, Anna Botsford, 1854-1930. Ithaca, N. Y. , Comstock Publishing Company
Size: 1067px × 2341px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorcomstockannabotsford1, bookcentury1900, bookdecade1910
