Books by Maynard M. Metcalf
Further studies on the opalini
Further studies on the opalinid ciliate infusorians and their hosts
The research attitude of mind
The research attitude of mind
Biology and industry
Metcalf and Bell upon Salipida
Metcalf and Bell upon Salipidae
The excretory organs of opalin
The excretory organs of opalina
The influence of the plasticit
The influence of the plasticity of organisms upon evolution
An outline of the theory of organic evolution
Notes upon an apparently new s
Notes upon an apparently new species of Octacnemus