7 



1. The most convenient method is that of 

 writing on the end or back of the slide with 

 ordinary ink. This should be quite dry before 

 placing in alcohol. There is then no fear of its 

 coming off. 



2. An excellent and extremely simple method 

 of labelling has been described by Dr. Powell, 

 (Bombay), viz : — After making a dry film, as 

 described above, the name, date, and other 

 necessary information, are scratched on the film 

 with the head or point of the needle. The films 

 used being extensive, the writing in no way injures 

 them. The first half inch or so of the film is 

 frequently rather thick, and much information as 

 to name, date, temperature, etc., may safely be 

 written on it. 



To Store Films 



Slide boxes may be used, holding the slide 

 vertically. These should be well cleaned out if 

 made of wood, otherwise fine sawdust accumulates 

 on the slide. A size which will go in the pocket, 

 and holds about twenty-five slides, will be found 

 a great convenience for daily work. Larger boxes 

 to hold one hundred or so are best for use at home; 

 half-a-dozen of these may be enclosed in a stronger 

 outside case. In a square foot of space something 

 like 1,500 slides can be stored in this way. 



If no box is at hand, films may be wrapped 

 in clean white paper ; a fold of paper being placed 

 between each slide. For transmitting half-a-dozen 

 films or so this is quite the most convenient way, 

 the whole of course being packed in a box or tin 

 with wool. 



