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



181 



No. 3600. 



No. 3602. 



No. 3604. 



No. 3608. 



3570. TVTTT.T., Sugar Cane, for extracting the juice from cane or other plant materials. With 2 rolls, 

 4x4 inches; with single gearing for hand power. Capacity, 125 pounds of cane per hour.. . $50.00 



3572. MTT.T., Beet Shredding, with knives and plates of steel. External parts tinned to prevent rust- 

 ing. Easily taken apart for cleaning. Capacity, 4 ounces per minute. Weight, 18 ounces. . 1.75 



3578. PULVERIZER, Braun, Type IT. A., with tight and loose pulleys for power use. The grinding 



plates are made of special alloy possessing a high degree of wearing quality and durability. 

 They are specially designed to secure best possible service, and can be easily replaced. The 

 large and small lugs (shown in the illustration) act as breakers and carriers while the outer 

 surfaces effect the pulverizing. The grinding plates are held in place in such a way that no 

 screw heads or bolt heads protrude, and can be quickly and easily removed. The machine 

 opens up so that every particle of material can be brushed into the pan. The interior is 

 smooth finished with all parts easily accessible for cleaning. The pulverizer is fed through 

 a spout in the door and will take particles up to % mesh and reduce to 100 mesh at one grind- 

 ing. Length of machine, 23 inches; width, 14 inches; height, 14% inches; size of pulleys, 

 9x2% inches; speed, 850 r. p. m.; power required to operate, 1 h. p.; shipping weight, 275 

 pounds; capacity (quartz ore), 1 pound to 100 mesh in 1 minute 108.00 



3579. EXTRA GRINDING PLATES for Braun Pulverizer per set 8.50 



For SAMPLERS, RIFFLE PLATES, etc., see Sampling Apparatus. 



3590. CULTURE DISHES, Petri Plates, in pairs, of clear glass with thin flat bottoms, well annealed 

 to withstand sterilizing. 



No A B C D E F G 



Diameter of upper dish, mm 50 75 90 100 100 120 150 



Depth, mm 10 10 10 10 15 20 20 



Per pair .23 .23 .26 .28 .28 .50 .64 



3592. COVER, of Porous Earthenware, for culture dishes 100 mm in diameter, to prevent spreading of 

 growth by water of condensation during incubation 20 



3594. COVER, of Porous Earthenware, same as Xo. 3592, but glazed 25 



3600. CULTURE DISHES, Moist Chambers, made of clear white glass, with cover. 



No A B 



Diam. of upper dish, mm 198 240 



Depth of lower dish, mm 70 80 



Each 2.25 2.50 



3602. CULTURE DISH HOLDERS, Ravenel, of nickel-plated spring wire, to hold dishes 100 mm in 

 diameter for incubation or sterilization. 



No A B 



To hold, dishes 3 6 



Each 50 .60 



3604. CULTURE DISH HOLDER, for 100 mm dishes, of polished copper, with inside tray for removing 



dishes. Size, 9 inches high by 4% inches in diameter 3.25 



3605. CULTURE DISH HOLDER, same as No. 3604, but made of sheet iron 1.80 



3608. CULTURE DISH HOLDER, for 100 mm dishes, round form, of polished copper, nickel-plated, 



with five shelves, door and handle. Size, 8x5 inches 9.00 



