
Otto Schmeil, Lehrbuch der Zoologie, Stuttgart, Nägele, 1903.

Otto Schmeil, Lehrbuch der Zoologie, Stuttgart, Nägele, 1903.
Samuel J. Hunter, Elementary studie in insect life, Topeka (KS), Crane & Co., 1903.
Douglas English, Wee Tim’rous Beasties Studies of Animal life and Character, Londres, S.H. Bousfield & Co., 1903.
John J. Ward, Minute Marvels of Nature, Being some Revelation of the Microscope, Londres, Isbiter & Company, 1903, pp. 222-228.
Eugene Smith, The Home Aquarium and how to care for it, New York, E.P. Dutton & Co, 1902,
p. 146-147.
S. Silcox & O. J. Stevenson, Modern nature study, A first book for use in Canadian schools, Toronto, George N. Morang, 1902, p. 161. Lire la suite
Mary Rogers Miller, The Brook Book, New York, Doubleday, Page & Company, 1902, pp. 33-36.
S.-N de Montille, Notions de Zoologie pour l’enseignement secondaire des jeunes filles, Paris, Félix Alcan, 1902, p.230.
A. S. J. Renard, « Les insectes nuisibles dans les missions. Moyens de défense chez les insectes » Bulletin des Missions belges de la Compagnie de Jésus, Bruxelles, Ch. Bulens, janvier 1901.

Dan Bear, The Outdoor Handy Book for Playground Field and Forest, Charles Scribner’s (1900), 2000.
Isaak Walton & Charles Cotton, The complete Angler of the contemplative man’s recreation: being a discourse on rivers, fish-onds, fish and fishing, Londres, George Bell, (1653), 1900. Lire la suite
Belle S. Cragin, Our Insect Friend and Foes, New York, G.P. Putnam’s Sons, 1899, p. 296-297.