CENTBAL SCIENTIFIC CO., CHICAGO, U. S. A. 



345 



No. 8656 (shown in use) 



No. 8656. 



8648. ILLUMINATOR, BULL'S-EYE~CONDENSER for the illumination of opaque objects and for 

 throwing parallel rays of light upon the mirror from an artificial source in ordinary work 



with transparent objects. Mounted as shown. Diameter of lens, 75 mm $8.00 



S6oO. IMMERSION OIL, Cedarwood, in 1-ounee vials per vial .36 



x<>56. INCUBATOR, Electric, for use on microscope stages. Especially valuable in the Widal test, for 

 the cultivation of bacteria, yeasts, spirochetes and tumor cells, and for the observation of 

 malarial parasites. Dimensions, 3^x2x% inch over all, with incubating chamber 3xlx% inch 

 deep, having a removable glass bottom, consisting of a regular microscope slide. The top is 

 a piece of clear mica with a hole cut through the center through which the lens is passed. A 

 rubber washer is provided for sealing the opening. Complete with heater, thermometer, tem- 

 perature regulator for any temperature from 80 to HOT., cord and special plug for attach- 

 ment to any regular 110-volt electric lamp socket, in velvet lined case 18.00 



LAMPS FOR MICROSCOPY 



8662. LAMPS, Microscope, Radio, for use with any microscope. Consists of a sheet metal housing, 



nickeled and highly polished, 6% inches in height, mounted on a jointed stand, permitting 

 adjustment at any angle. Complete with special 40 watt Radio globe with concentrated metal 

 filament, one each Rav Filter Blue and White-Ground, 6 feet of cord and connecting plug. 



No A B 



For volts 110 220 



Each 8.00 8.50 



8663. LAMPS, Microscope, Radio, same as Xo. 8662, but with Daylite Filter instead of Blue Filter. 



No ". A B 



For volts 110 220 



Each 10.00 10.50 



8666. LAMPS. Microscope. Radio, for Darkfleld Illumination, similar to No. 8662, but with special 



Radio-Nitrogen Globe for high power illumination in dark-field work. Complete with Blue 



and White Ground Filters, connecting cord and plug. No A B 



For volts 110 220 



Each 10.00 15.50 



Note: No. 8666B includes rheostat for reducing voltage to safe amount for Radio-Nitrogen 

 Globe. 



8667. LAMPS, Microscope, Radio, same as No. 8666, but with Daylite Filter instead of Blue Filter. 



No '. A B 



For volts 110 220 



Each 12.00 17.50 



Note: No. 8667B rheostat. 



8670. ADAPTER for Nos. 8662 and 8663, to permit a Radio-Nitrogen Globe to be used for dark-field 



work 1.50 



8671. RADIO GLOBE, 40 watts, 110 volts, for Nos. 8662 and 8663 1.50 



^',72. RADIO GLOBE, 40 watts, 220 volts, for Nos. 8662 and 8663 2.00 



8673. RADIO-NITROGEN GLOBE, 100 watts, 110 volts, for Nos. 8666 and 8667 2.00 



8674. RHEOSTAT, for use with Radio-Nitrogen Globe No. 8673 on 220 volt circuit 5.00 



8675. DAYLITE FILTER for use with Radio Lamps 2.50 



8676. BLUE FILTER for use with Radio Lamps 75 



8677. WHITE-GROUND FILTER for use with Radio Lamps 50 



