A protective cover that protects the face of a watch.
1 So you can watch glass shatter and roofs fall down in front of you.
2 The beaker is then covered with a watch glass .
3 On a watch glass mix thoroughly a very small piece of yeast with about 5 cc.
4 The food, when moist, may be placed in the cages in the same kind of watch glass .
5 Collect the skins, place on a watch glass and dry in the water oven for ½ hour.
6 Put your watch glass to his lips.
7 A watch glass serves as a basin.
8 Filter on to a watch glass and let stand until the ether evaporates, and then observe the fat.
9 This lies on the upper and less curved polar surface of the nutritive yelk like the watch glass on the yelk.
10 Evaporate both, the larger portion in an evaporating basin over wire gauze, the smaller portion in a watch glass heated by steam.
11 If any poison remained in my animal's caudal gourd, there must be at least some traces of it in the infusion in the watch glass .
12 What else is there in the mixture in my watch glasses ?
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Translations for watch glass