Petri dish be used to observe plant germination, the behavior of very small animals or for other day-to-day laboratory practices such as drying fluids in an oven and carrying or storing samples. Their transparency and flat profile also mean they are commonly used as temporary receptacles for viewing samples, especially liquids, under a low-power microscope. Petri dish A Petri dish (sometimes spelled "Petrie Dish" and alternatively known as a Petri plate or cell-culture dish), named after the German bacteriologist Julius Richard Petri, is a shallow cylindrical glass or plastic lidded dish that biologists use to culture cellssuch as bacteriaor small mosses. Modern
Butter dish using water to keep the butter away from the air, thereby keeping it fresh. The water is placed into the base of the dish and the butter is put into a bell-shaped lid, creating an air seal. Butter dish A butter dish is defined as "a usually round or rectangular dish often with a drainer and a cover for holding butter at table". Before refrigerators existed, a covered dish made of crystal, silver, or china housed the butter. The first butter dish was made by Simpson, Hall, Miller, and Co. around 1880 in Connecticut, out of silver. These butter dishes