Adams, C. C., “An Ecological Study of Prairie and Forest Invertebrates,” Bull. Illin. St. Lab. Nat. Hist., 1915, xi.
Cameron, A. E., “General Survey of the Insect Fauna of the Soil,” Journ. Econ. Biol., 1913, viii. “Insect Association of a Local Environmental Complex in the District of Holmes Chapel, Cheshire,” Trans. Roy. Soc. Edin., 1917, lii.
Darwin, C., “Vegetable Mould and Earthworms,” London, 1881.
Hamilton, C. C., “The Behaviour of some Soil Insects in Gradients of Evaporating Power of Air, etc.,” Biol. Bull., 1917, xxxii.
Morris, H. M., “Observations on the Insect Fauna of Permanent Pasture in Cheshire,” Ann. App. Biol., 1921, vii. “On a Method of Separating Insects and other Arthropods from Soil,” Bull. Entom. Res., 1922, xiii. “The Insect and Other Invertebrate Fauna of Arable Land at Rothamsted,” Ann. App. Biol., 1922 A, ix.
Reh, L., In Sorauer’s “Pflanzenkrankheiten,” 1913, iii.
Richardson, C. H., “The Attraction of Diptera to Ammonia,” Ann. Ent. Soc. Amer., 1916, ix.
Russell, E. J., “The Effect of Earthworms on Soil Productiveness,” Journ. Agric. Sci., 1910, iii.
Shelford, V. E., “Animal Communities in Temperate America,” Chicago. 1914, “The Importance of the Measure of Evaporation in Economic Studies of Insects,” Journ. Econ. Entom., 1912, vii.