LABORATORY APPLIANCES. 



BUY LABORATORY SUPPLIES IN PITTSBURGH 



THE " CITY OF LABORATORIES " 



MAGNIFYING GLASSES 



FOR THE POCKET 



Best Quality Lenses, Hard Rubber Cases 



No. 50. 1 Lens, 18 mm. Diameter, 15c. net 



No. 51. 2 Lenses, 15 and 18 mm. 30c. net 



No. 56. 1 Lens, 25 mm. Diameter, 23c. net 



No. 57. 2 Lenses, 21 and 25 mm. 37c. net 



BUY A SAMPLE DOZEN 



S. M. Co.'s "UTILITY" DISH 



Handy for holdine and manipulating solutions, samples, &e- 

 Diameter TA cm., heifiht 9 cm., full capacity 250 cc. 



ANY QUANTITY, 60C. PER DOZEN 



BUNSEN BURNER 



No. 100 



WITH FLAME CHECK. 



HEIGHT, 15 cm. 



Well made and gives a perfect 

 flame. Nothing cheap but the 

 price 



25 Cents, net. 



We have 20 approved forms 

 Bunsen Burners, covering every 

 possible requirement. 



Only $10.80 



or a " RAUSCH ^'C T.OMi; ' 

 new form 



Microscope 



Complete for examination of all 

 objects, such as pond life, parts of 

 insects, and other materials. 



Gives magnifications, of 53 

 diameters (2,809 times) and iSo 

 diameters (32,400 times). Fur- 

 nished in neat cherry carrying 

 case with metal handle. 



$10.80 



NET 



Our "COMPETITION" 



Laboratory Burner or Hot Plate 



DIAMETER AT BASE, 5 INCHES. 



Gives a hot flame with natural or artificial gas. A 

 eral purpose " burner for heating vessels and pans. 



PRICE: 



EACH, - 

 PER DOZEN, 



$ .15 net 

 $1.80 net 



TIME REGULATOR 



Should be in every laboratory. 

 Wholly relieves the operator 

 from care or anxiety. Auto- 

 matically shuts off supply of gas 

 a^ any desired time. Can be 

 used in connection with any gas- 

 heated apparatus. The gas valve 

 is metallic, gas-tight, and oper- 

 ates with absolute certainty. 



PRICE: 



$4.00 net. 



Botanical and Entomological Supplies. Reagents and Staining Material, dry or in solution. 



MANUFACTURERS AND DIRECT IMPORTERS, 



7nA Penn Avenue, PITTSBURGH, PA. 



