D. B. SCOTT ON TYPE SLIDES FOR OPAQUE OBJECTS. lf)9 



8. Glue on a strip of thin black paper (black tissue) cut to 

 the size and shape of sketch No. 1. Thin the glue with a little 

 water, just thin enough to prevent the paper tearing when it is 

 brushed on. 



9. Glue on a similar piece of black paper, cut as in sketch iSTo. 1, 

 making the join on the opposite side of the built-up cell. 



10. Cut a piece of thin black paper, 3 inches by 1, and glue 

 over the last-made join. Press the finished slide between two 

 flat surfaces, such as a table and a piece of smooth hard wood, to 

 squeeze out all the air cells in the moist paper. Put it away to 

 dry for two or three days. 



2V 



No. 1. Shape of Paper, as paragraphs 7, 8, 9. 



11. When the cell is dry, cut out the centre of the surface on 

 the side having the glass cover (see paragraph 12), 2y% inches 

 long by I inch wide, leaving about i inch on each side and -f^ inch 

 on each end. Then cut oft' one end Jg- of an inch on top and 

 J^ inch on the end of the cell. This will allow the glass cover to 

 be pushed out through the slot thus made at one end of the slide- 

 If there is no glue on the glass it will come out quite easily when 

 you press it with your thumb and slide it towards the slot ; or 

 it can be pushed out from the opposite end with a blunt needle 

 pierced through the paper. Do not use a sharp needle, or you 

 will crack the slide. Before cutting the slot in the end of the 

 slide measure both ends accurately and cut the widest end, as 

 the glass slips are frequently a little wider at one end than at the 



