64 



BENJ. PIKE'S, JR., DESCRIPTIVE CATALOGUE. 



by its depressed part, from whence they are conveyed by 

 the nose or beak into the receiver. They are made of glass 

 and stone ware glazed, usually of the capacity of one quart. 



Price, $2.50. 



Fig. 492. 



Fig. 494. 



Figs. 493. 



Beaker Glasses. (Fig. 492, as above.) These glasses are 

 used for a variety of purposes in chemistry, viz. for mixing 

 solutions and precipitating, also for boiling and even extract- 

 ing any solution. They are generally made of very thin 

 glass, and of the shape shown in the cut. They are particu- 

 larly useful for boiling and concentrating solutions, and if 

 made of good glass, will stand heat well. Care must be 

 observed in selecting them, to see that the glass of which 

 they are made contains no flaws, and also that it is equal in 

 thickness, otherwise they are apt to crack. Four of them 

 are sufficient for general use, commencing with one to hold 

 two ounces, and increasing in size to half a pint. 



Price, 20cts. to 50cts. 



Precipitating Glasses. (Fig. 493, as above.) These are 

 made of glass, and in various shapes ; those, however, shown 

 in the figures are the best forms. They are used in pre- 

 cipitating salts or other substances from the solutions in 

 which they are formed. Price, 15cts. to 25cts. 



Funnels. (Fig. 494, as above.) These are best made of 

 glass, and should be ribbed on the sides. They are used 



