He says of the Spongi that they are moved by animalcula which inhabit them.
There is no doubt that animalcula of sorts get into these cavities and probably die there.
Animalcula is the plural of animalculum; there is no such word as animalculœ.
Animalculum (plural, animalcula) is used with the same meaning.
Perhaps the animalcula or infusoria furnish the best example.
The air which we breathe, the food which we eat; all fluids especially, are full of animalcula of very different kinds.
Eruptive ailments are excited by external causes, which he supposes to be animalcula.
Animalcula polypoda, spiraculis lateralibus respirantia, cute ossea cataphracta; antennis mobilibus sensoriis instruuntur.
Animalcula were first scientifically observed by Leuwenhoek about the year 1677.