PLATE 18. 



Small room arranged for making lantern slides and enlargements on bromide paper. 



The parts of the window shutter are as follows: ( I ) frame work, (.2) circular piece giving rotary motion. (3) one of two stationary pieces 

 under which No. 4 slides, (4} negative carrier, (, 5} one of two stationary pieces under which No. 6 slides, (6) side pieces designed to cut 

 out all the side light except that which comes through the negative. 



