THE 



No. 1 SCOVILL SCIOPTICON, 

 Complete with Double Slide Carrier, 



$30. 



No. 2 SCOVILL SC10PTIC01T, 



Complete with Double Slide Carrier, 



$50. 



After experimenting with most of the lanterns in the market, we have 

 come to the conclusion that for parlor or small hall exhibitions, chemical 

 and optical experiments, etc., the SCOVILL LANTERN affords, at a moderate 

 price, the greatest number of advantages, and from its simplicity and non- 

 liability to get out of order, gives, even in inexperienced hands, results 

 superior to all others. 



The No. 1. SCOVILL SCIOPTICON when packed for carrying, in its own 

 Russia iron case, measures 15 x 10 x 6 inches, and weighs 12 pounds; the 

 case serving as a convenient stand when the lantern is in use. 



The CASE and BODY of the Lantern are of Russia iron, and neat and 

 compact in form. That part of the body which surrounds the lamp is double, 

 the outer covering being ornamentally perforated so as to allow a constant 

 current of air to circulate and keep down the temperature. 



The lamp is of the triple wick variety, and so constructed that the three 

 flames combine, and by the draught of a ten-inch chimney give a brilliant 

 flame. 



The CONDENSER is four inches in diameter, neatly mounted in brass, 

 thoroughly ventilated, and arranged with screw flange so that the lenses 

 may be separated and cleaned when required. 



The CONE, which carries the objective, and the mount of that lens are 

 nickel-plated. The objective is a double achromatic lens of one and a half 

 inch clear aperture and five-inch focus, so that at a distance of twelve feet 

 from the screen, it gives a brilliant picture on disc six feet in diameter. The 

 focus is roughly obtained by sliding the front, carrying both cone and lens; 

 and fine adjustment by a rack and pinion on the objective. 



The No. 2 SCOVILL SCIOPTICON measures, when packed in case for car- 

 rying, 18^ x 12 x 8^, and weighs 19 pounds. The objective is a double 

 achromatic lens of 1^ inches clear aperture and 5J^ inches focus so that at 

 a distance of about twelve feet from the screen it shows a brilliant picture 

 on disc eight feet in diameter. The lamp has five wicks and is corres- 

 pondingly more powerful than the lamp with the No. 1 Sciopticon. 



THE SCOVILL, & ADAMS COMPANY, 



423 Broome Street, New York. 



