Norman Criddle
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Norman Criddle, born in 1875 in
Addlestone Addlestone ( or ) is a town in Surrey, England. It is located approximately southwest of London. The town is the administrative centre of the Runnymede (borough), Borough of Runnymede, of which it is the largest settlement. Geography Addlesto ...
, Surrey, England, died in 1933 in
Winnipeg Winnipeg () is the capital and largest city of the Provinces and territories of Canada, Canadian province of Manitoba. It is centred on the confluence of the Red River of the North, Red and Assiniboine River, Assiniboine rivers. , Winnipeg h ...
, Manitoba, Canada, was an
entomologist Entomology (from Ancient Greek ἔντομον (''éntomon''), meaning "insect", and -logy from λόγος (''lógos''), meaning "study") is the branch of zoology that focuses on insects. Those who study entomology are known as entomologists. In ...
active in the early development of control strategies for agriculturally important
grasshopper Grasshoppers are a group of insects belonging to the suborder Caelifera. They are amongst what are possibly the most ancient living groups of chewing herbivorous insects, dating back to the early Triassic around 250 million years ago. Grassh ...
s (Insecta:
Orthoptera Orthoptera () is an order of insects that comprises the grasshoppers, locusts, and crickets, including closely related insects, such as the bush crickets or katydids and wētā. The order is subdivided into two suborders: Caelifera – gras ...
) in the
prairie Prairies are ecosystems considered part of the temperate grasslands, savannas, and shrublands biome by ecologists, based on similar temperate climates, moderate rainfall, and a composition of grasses, herbs, and shrubs, rather than trees, as the ...
croplands of western North America, as well as a
naturalist Natural history is a domain of inquiry involving organisms, including animals, fungi, and plants, in their natural environment, leaning more towards observational than experimental methods of study. A person who studies natural history is cal ...
-artist.


Career

In 1902, faced with food crop devastation from a peak in the population of grasshoppers, Criddle developed a mixture of pesticidal
toxins A toxin is a naturally occurring poison produced by metabolic activities of living cells or organisms. They occur especially as proteins, often conjugated. The term was first used by organic chemist Ludwig Brieger (1849–1919), derived ...
called the "Criddle Mixture" to combat them, and was hired by the provincial government to demonstrate its use to farmers. In 1913 the Manitoba government hired him as an entomological field officer, and in 1919 he was appointed the provincial entomologist. Gifted with considerable artistic ability, Criddle illustrated a number of agricultural books; his and Dr. James Fletcher's ''Fodder and Pasture Plants'' and ''Farm Weeds of Canada'' are especially noteworthy.


Education & Honors

Criddle was awarded an honorary diploma from the Manitoba Agricultural College, was honorary president of the Natural History Society of Manitoba from 1925 to 1933, and a member of the Manitoba Agricultural Hall of Fame. His family's homestead in Aweme, Manitoba, the Criddle/Vane Homestead, has been declared a Manitoba Provincial Heritage Park.Holliday, 2006, ''op.cit.''


Publications

Criddle authored and illustrated a number of works between 1906 and 1934. *


See also

List of entomologists


References


External links


Norman Criddle (1875-1933) Manitoba Agricultural Hall of Fame
{{DEFAULTSORT:Criddle, Norman Canadian entomologists 1875 births 1933 deaths People from Addlestone People from Westman Region, Manitoba Scientists from Manitoba