Amoeboid of the month

 

Allogromia

This is a stained preparation of a freshwater Foraminifer, Gromia brunneri. It was made around 1900 by the excellent Swiss protozoologist Eugène Penard (1855-1954). The specimen was dehydrated with alcohol, stained with borax carmine and embedded in Canada balsam. It has an agglutinated test, that is a membrane covered with a large number of extremely fine mineral particles and also some organic debris. The slide is part of the Penard collection in the Natural History Museum in Geneva.

 

 

Phryganella acropodia

 

Hyalosphenia - Assulina - Arcella - Difflugia - Cyphoderia - Centropyxis - Nebela