46 THE MICROSCOPE. 



water along /and through the bent tubing which sur- 



FIG. 28.Eartl#y's Warm Stage. 



rounds the object on the stage D, and passing off through 

 the open end c into the receptacle B, placed to receive 

 the overflow. 



Mr. Stephenson's safety-stage is one of those happy 



FIG. 29. Stephenson's Safety-Stage. 



contrivances by means of which an accident to either 



