Here then was the cup or calyx of a definite vorticellan form changing into (?) an absolutely different infusorian, viz.    From Wordnik.com.  [Scientific American Supplement, No. 643, April 28, 1888] Reference

At the end of each branch is situated an infusorian (vorticella), and the whole colony represents in itself the genealogical family tree.    From Wordnik.com.  [Scientific American Supplement, No. 810, July 11, 1891] Reference

The difference between man and the infusorian is only that in the former the cells which originate from the double cell (the fertilized ovum) remain together and become differentiated one from another, while in the latter the cells are usually scattered but remain alike in appearance, etc.    From Wordnik.com.  [Scientific American Supplement, No. 810, July 11, 1891] Reference

And it may be asked what advantage, as far as we can see, would it be to an infusorian animalcule—to an intestinal worm—or even to an earthworm, to be highly organised.    From Wordnik.com.  [IV. Natural Selection; or the Survival of the Fittest. On the Degree to Which Organisation Tends to Advance] Reference

And it may be asked what advantage, as far as we can see, would it be to an infusorian animalcule -- to an intestinal worm, or even to an earthworm -- to be highly organized.    From Wordnik.com.  [Introduction to the Science of Sociology] Reference

If we take an infusorian sufficiently large, such as the Stentor, and cut it into two halves each containing a part of the nucleus, each of the two halves will generate an independent.    From Wordnik.com.  [Introduction to the Science of Sociology] Reference

A new generation; how this simple asexual process continuing for several generations results in growing weakness and old age, steadily decreasing size, steadily decreasing vitality until there comes a time when one infusorian unites with another.    From Wordnik.com.  [The Social Emergency Studies in Sex Hygiene and Morals] Reference

These ganglia are the brain of this infusorian.    From Wordnik.com.  [The Dawn of Reason or, Mental Traits in the Lower Animals] Reference