170 T>. B. SCOTT ON TYPE SLIDES FOR OPAQUE OBJECTS. 



other. Grind the corners of the end to be pushed in on an oil- 

 stone : this will prevent the usually sharp corners of the glass 

 from tearing the paper when it is pushed into place. 



12. When building up the slide keep sketch No. 2 in front of 

 you and work in the same way. By this means you will always 

 know which is the top or glass cover side, as the bottom is the 

 side on which the last strip, 1 by 3, is pasted (paragraph 10). 



m. 



.^^^^^^v'AV^■^v^^^^^^^v^u ^^v^u^u^>v^\^■^^\^'■^^\^\\^TV^TO^ 



^.. Manilla iiai'w. 6^ by 1 in., par. il. 

 ' "'^^ ,. Manilla paper, 3 by 1\ in. , par. •".. 



I. Thin glass slip, par. 4. 



L — — .. Slip of wood, par. 2. 

 ;. - Photo, bottom, par. ". 



■ Manilla paper as Sketch 1, par. 7. 



-V;- Tliin black paper ,, 1, par. 8. 



--^"•■- Ditto ditto „ l,par. !i. 



~^-- strip of thin ditto, par. 10. 



DiAGEAMMATIC. 



No. 2. Transverse section throngh centre of slide. 



13. Take the glass slip out, and replace it with a strip of mica 

 or thin tin. Blacken the edges where cut, and put aside for an 

 hour for the black to dry. Then replace the glass slip, and put 

 aside in a warm place (not hot) for five or six days, to thoroughly 

 dry and season. If allowed to dry without the glass slip being in 

 place, it will be sure to warp. 



