
H. C.  BastianH. C.  Bastian:
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•	"Monograph of the Anguillulidae". 
•	He described 100 species of 30 genera in which 23 genera were new. Illustrations were fairly good. 
•	He also reported different ways to collect nematode, from soil, plant tissue, fresh and salt water (1866). 

J. deMan J. deMan:
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•	He suggested the ratio alpha, beta, and gamma equivalent to a, b, and c that we use in taxonomy (1880).

Nathan Augustus CobbNathan Augustus Cobb:
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•	Referred to as the "Father of Nematology in the United States".
•	He identified over 1000 species of nematodes, including animal parasitic, plant parasitic, free-living, fresh water, and marine forms. 
•	He made many innovative technical contributions to Nematology, including: (a) fixation and preservation methods; (b) the Cobb metal mounting slide; (c) adaptation of photographic equipment, light filters, and improvements in the camera lucida for microscopic use with nematodes; and (d) development of the first flotation device for removing nematodes from soil.