... water.Withdraw the watch-glasscarefully,allow the precipitateofAgCl tofallinto the crucible,andremove the parting flask.Four the wateroutof the crucible,remove the lastportionswithfilterpaper,anddryona ... cutlengthwi.'icin the caoutchouctubing,and the openend stoppedwithapieceof glassrod. The valve isthencomplete,(Fig. i.)Fig. 1.Fio.In placeof the KrOnigvalve,anotherformmaybe used. The projectingend ... used. The projectingend of the glasstube,fittedto the corkin the neckof the flask,ispassedthroughanothercorkuntiljust even withitssurface.Over the endof the corkandtubeasmallpieceof...