Quart. Journ. Micr. Soc. (n.s.) vol. xxiv. 1884, p. 352.
The definition of the Orders and systematic position of the genera and species referred to under this head will be found in a following section (pp. [220] f.).
Reprinted in Baker's Employment for the Microscope, 1785, pp. 267 f.
"Wheel Animals, though found with most Certainty in Leaden Gutters, etc. are often discovered in the Waters of some Ditches, and likewise in Water that has stood a considerable Time even in the House; for I have often met with them, in sufficient Plenty, in a Sort of slimy Matter that is apt to be produced on the Sides of Glasses and other Vessels, that are kept long with the Infusions of Hay or other Vegetables; and probably they are wafted thither by the Air, when in the Condition of little dry Globules."
Gosse's account of the "Structure, Functions, and Homologies of the Manducatory Organs in the Class Rotifera" (in Phil. Trans. 1856) remains as the most complete anatomical account we have, though his attempt to identify these parts with the modified limbs of the Arthropod mouth has met with no support from subsequent workers. Gosse rendered these parts clearly visible by the use of dilute caustic alkali.