340 



A. DAIGGER & COMPANY, CHICAGO, U. S. A. 



6138 



6138 ELECTRIC INCUBATOR, for the Microscope Stage. This warming stage is a 

 miniature Incubator complete in itself. It fits the mechanical stage of any 

 standard microscope. 



The outside dimensions are 3^ inches x 2 inches x Yz inch in thick- 

 ness. The incubating chamber measures 3 inches x 1 inch x Yz inch in 

 depth and has a removable glass bottom consisting of a regular 3x1 slide. 

 The specimen to be examined is placed on this slide. The condenser may 

 thus be brought up close to the glass, same as under ordinary conditions, 

 permitting the use of the oil immersion lens. 



\ 



To cover top of Incubator we furnish a piece of clear Mica having a 

 hole cut in center through which the lens is passed when making adjust- 

 ment for the bottom, slide. A rubber washer slipped over the lens is pro- 

 vided for sealing the opening between the lens and mica. (See illustration.) 

 By this arrangement a perfect incubating chamber is obtained where 

 bacteria may be observed for any length of time. 



The Incubator is complete in every detail with heating element, ther- 

 mometer and adjustable electro-thermostat, which automatically main- 

 tains a constant temperature inside the incubating chamber, as long as the 

 electric current is on. This device can be adjusted for any temperature 

 between 80 and 110 degrees Fahrenheit and is very accurate. 



To operate, simply screw the current tap with its lamp into any 110- 

 volt electric lamp socket and turn on the current. 



Incubator answers all the requirements that a warming stage should 

 have. In the Widal test for typhoid it may be used to great advantage. It 

 is particularly well adapted for observation of Plant micro-organisms, 

 such as bacteria and yeasts in a hanging drop, or a hanging Agar block; 

 also for observation of Microscopic animal-organisms such as Malarial 

 Parasites, Trypanosomes and Amoeba. 



A number of diseases found in all tropical countries cannot be properly 

 examined without a Warm Stage. 



For cultivation of Spirochetes and tumor cells by the recent methods 

 of Harrison, Noguchi and others, this apparatus has no equal. 

 Price, complete in velvet-lined case $18.00 



