LABORATORY SUPPLIES AND CHEMICALS 



341 



6140 



6140 Electrically Heated "Warm Stage" for the Microscope. Our electrically heated 

 "Warm Stage" is the only appliance of its kind now on the market. It will 

 be found most compact and convenient and always ready for use, as it fits 

 the stage of any microscope without adjustment. 



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

 volt electric lamp socket and turn on the current. 



The Warm Stage measures 8^2 inches in diameter x J/2 inches in thick- 

 ness and has a 54-inch hole in the center over which the regular micro- 

 scopic glass slide may be placed. 



It is complete in every detail with heating element, thermometer and 

 adjustable electro-thermostat that automatically maintains a constant tem- 

 perature on the top of the disc, as long as the electric current is turned on. 

 With this Warm Stage, micro-organisms requiring blood heat temperature 

 (98 Fahrenheit) for maintaining their motility, can be readily discovered 

 and examined. 



The most important purposes for which the Warm Stage may be used, 

 among others, are as follows: 



a. To determine if a case of dysentery is of amoebic variety, Entamoeba 

 Dystenteriae (Histolytica). The stools or scrapings from the rectum 

 are searched on the Warm Stage for living moving Amoeba. 



b. To search for Plasmodium, Plasmodium Malarae, in the fresh prepara- 

 tion of patient's blood in the diagnosis of suspected Malaria. 



c. To ascertain if the fresh Spermatozoa is alive. This is of particular 

 value in the Medico-legal cases. 



d. To discover the presence of Amoeba, Entamoeba Buccalis, in suspected 

 cases of Pyorrhea Alveolaris. 



When it is desired to examine a large area the Warm Stage is most 

 practical. This device is intended to supplant the old, cumbersome hot 

 water warm stage. It is light, compact and convenient. It relieves the 

 operator of all worry as to its positive efficiency. 



The illustration shows the application of the "Warm Stage" to the 

 microscope .^ table. 

 Price, complete : $12.00 



