Banks, N.
1907. A “Census of Four Square Feet.” Science, N. S., Vol. XXVI, p. 637.
A criticism of McAtee (1907).
1909. Directions for Collecting and Preserving Insects. Bull. 67, U. S. Nat. Mus. pp. 135.
An excellent manual. Should be in the hands of every student of insects.
Bretscher, K.
1902. Beobachtung über die Oligochaeten der Schweiz, VI. Folge. Rev. Suisse de Zoöl., Ann. Soc. Zoöl. Suisse et du Mus. d’His. Nat. de Geneve, Tome 10, pp. (1-29).
1904. Die xerophilen Enchytraeiden der Schweiz. Biol, Centralbl., Bd. XXIV, pp. 501-513.
Quantitative studies of earthworms in the soil.
Brunner, J.