Probably designed to contain and store water being treated with radium, for drinking.
Device popularized in 1920 -1930s as means of imparting "curative" properties of radon/radioactivity to drinking water for home/private consumption. Because radon cannot remain in water for any length of time before breaking down or escaping, jars like these were promoted as a means of 'making' radon-enriched water for drinking. The radon produced by the disk (.3) would dissolve overnight in the water filled jar.
Made in Toronto, Ont. by Radium Health Products of Canada. Typical of containers designed, manufactured, sold and used in Canada for this purpose in 1920-1930s.
earthenware; stainless steel (?)
Number of Parts
Beige-colour glazed earthenware jar has silver metal (stainless steel ?] spout. Underside of jar (base) is not glazed.
"I/ RADIUM/ WATER" and "RADIUM HEATH PRODUCTS/ OF CANADA/ TORONTO, - ONT." printed in black ink on jar front. " TRADE-MARK/ "C & H"/ N.Y./ PAT'D MAR. 21-1911/ PAT'D SEPT. 4- 1917" incised in spout. UHN catalogue no. "998.6.1" printed by hand in black ink along lower rear edge of jar.
ceramic->earthenware;metal->stainless steel - possible