Signedon side, vertically, embossed: EVENFLO
Inscribedembossed, down one side: EVENFLO® [a measurement scale in CCs (50-100), and a measurement scale in OZ. (1-4)]
FunctionThis bottle was filled with water and mounted, with the feeder tube facing down, onto a cage with rats. This particular bottle was used in J. B. Little's laboratory to dole out water "ad libitum" to the rats in order to measure their "antidiuretic activity."
Primary SourcesUsed in John B. Little and Edward P. Radford Jr., “Bio-assay for antidiuretic activity in blood of undisturbed rats,” Journal of Applied Physiology 19 2 (1964): 179-186. Also available in CHSI Library Lib.6066. 'Figure 1' in this paper features this feeder bottle, or one similar to it.
ProvenanceJohn B. Little, Department of Cancer Cell Biology, Harvard School of Public Health; gift to CHSI, 2003.