404 



CENTRAL SCIENTIFIC CO., CHICAGO, U. 8. A. 



No. 1320. No. 10464. No. 10470 No. 10476. No. 10481. 



No. 10460. No. 10466. No. 10472. No. 10480. No. 10486 



PICKS, Mineralogical, see Hammers. 

 PILL BOXES, see Boxes. 

 PINS, Insect, see Insect Pins. 



10448. PINS, ordinary, stiff and sharp pointed, in y-> pound boxes Per box $1.00 



10454. PIPES, Clay Per dozen .25 



PIPETTES 



PIPETTE, Automatic Dropping, with rubber bulb, for delivering exactly 1 cc. Convenient for 

 filling ampoules 1.00 



PIPETTES, Automatic Overflow, with patent three-way stop-cock, and reservoir for collecting 

 the excess. 



Capacity, cc 10 25 50 



Each 3.50 3.60 3.75 



PIPETTE, Automatic Overflow, same as No. 10460, but with capacity of 17.6 ec for Milk 

 Testing 3.50 



PIPETTE, Calibrating, Ostwald's, capacity 2 cc 80 



PIPETTE, Capillary, for preparing milk smears on microscope slides for counting the bacteria 

 present. Graduated at i^oo cc. With a 6.4X ocular and a 1.9 mm objective (oil immersion), 

 a 195 mm tube furnishes an apparent field of %ooo square cm. (See Bulletins 373 and 378 

 of the New York Experiment Station) 1.00 



PIPETTES, Double Automatic, with stop-cock so made that one pipette fills while the other 

 empties. 



Capacity, cc 25 50 100 



Each 7.00 7.50 8.00 



PIPETTE, Double Automatic, Rothe's, for use in determining iron as perchloride by means of 

 ether. Graduated to 200 cc as illustrated 12.00 



PIPETTES, Dropping, Medicine Droppers, with rubber bulb. Length, 4 inches; capacity, about 



.30 



1320. 

 10460. 



10461. 



10464. 

 10466. 



10470. 



10472. 

 10476. 



10477. 

 10480. 



2 ee Per dozen 



PIPETTES, Dropping, same as No. 10476, but with tip curved Per dozen 



PIPETTES, Dropping, straight, without bulb. 



.30 



Length, inches 8 12 



Each .10 .15 



10481. PIPETTES, Dropping, same as No. 10480, but with rubber bulb of 25 cc capacity. 



Length, inches 8 12 



Each 30 .45 



(Other lengths will be made to order.) 

 PIPETTES, Gas, see Gas Analysis Apparatus. 



10486. PIPETTE, Glucose, Spencer's, capacity 50 cc, graduated from 5 to 20 on the Brix scale in. 



2.00 



