infusorial

Chapter V.--Curious pumiceous infusorial mudstone (page 118) of Patagonia; climate of old Tertiary period, page 134.

These vesicles, when singly detached and regarded in their original process of production, are the infusorial mass or protoplasma (Urschleim) whence all larger organisms fashion themselves or are evolved.

He wrote many articles on scientific subjects for the American Journal of Science and for scientific societies, a report on the infusorial fossils of California, and a valuable volume of Microscopical Sketches, containing 3000 original figures.

These researches had an important bearing on some of the infusorial earths used for polishing and other economic purposes; they added, moreover, largely to our knowledge of the microorganisms of certain geological formations, especially of the chalk, and of the marine and freshwater accumulations.