36 SCIOPTICON MANUAL. 



Beginners who wish to understand and operate the 

 Sciopticon by explanations and directions which can be 

 seen at a glance, may examine in connection with Fig. 

 15, the following 



RECAPITULATION. 



The front, h h h', with its attachments, draws apart 

 from the body of the instrument. 



The stage o o r lifts out. 



The condenser, p q, is drawn out by laying hold of 

 the ring r. 



The cells holding p and q draw apart. 



The front flame-chamber glass G- is held in place by 

 the spring A, which can be reached through the open- 

 ing over A. 



With h o p q Gr removed, the narrow glass F (found 

 packed with the extra wicks) is reached to position, 

 and needs no further attention. 



The portion of chimney attached to the cap J, tele- 

 scopes into /. 



The lamp S slides out horizontally, by raising the 

 spring X. 



With packing removed, glasses clean, lamp filled two- 

 thirds full of standard kerosene oil, and all parts in place 

 as seen in the cut, remove the back glass Gr', and reach 

 the wiqks v v with a lighted match. Beplace G f , and 

 let the flames stand about one inch high. 



See, specially, that an oil so inflammable as to light 

 at the safety slit u is not used that no oil is left outside 

 the lamp-cup, to give oif an offensive smell that the 

 wicks at v v are not raised to rnb against the plate JL" 

 when the lamp slides in and out that the flame-chamber 

 glasses Gr Gr' are in place to secure draft, and that the 



