J. Powers

The Causes of Acceleration and Retardation in the Metamorphosis of Amblystoma tigrinum: A Preliminary Report

J. Powers, 1903, The American Naturalist.

A Case of Polymorphism in Asplanchna Simulating a Mutation

J. Powers, 1912, The American Naturalist.

A NEW SPECIES OF PARAMECIUM (P. MULTIMICRONUCLEATA) EXPERIMENTALLY DETERMINED

J. Powers, C. Mitchell, 1910 .

Transmission through the resting egg of experimentally induced characters in Asplanchna amphora

J. Powers, C. W. Mitchell, 1914 .