Bauhaus-Universität Weimar

Optic Projection: Principles, Installation and Use of the Magic Lantern, Projection Microscope, Reflecting Lantern, Moving Picture Machine
Gage, Henry Simon and Henry Phelps Gage
[Ch. VIII 
§ 340. Summary of Chapter VIII: 
1. Use the standard size of 
lantern slides in the country 
where you live (§ 312). 
2. Make the lantern slides 
with moderate intensity, then 
they can be used with all lan¬ 
terns, no matter what the source 
of light (§327). 
3. Make the picture small 
enough so that all desired parts 
can be projected (§ 334). 
4. Take pains in mounting 
the slides so that thfc frame will 
appear suited to the subject 
(§ 334)- 
5. In making slides direct on 
the varnished glass, write finely, 
neatly and clearly (§ 316). 
6. Printed or written matter 
on the slide should be large 
enough to be read by all in the 
room C§ 325)- 
7. Mark or spot the lantern 
slides so that they can be in¬ 
serted in the holder without 
hesitation (§ 335). 
8. Label every lantern slide 
so that any one can tell what it 
is (§ 337)- 
9. Store the lantern slides so 
that thev can be found quicklv 
(§ 338)/ 
Do Not 
1. Do not use odd sized 
pieces of glass to make lantern 
slides on. 
2. Do not make the lantern 
slides so opaque that only the 
best electric lanterns can ex¬ 
hibit them. 
3. Do not make the picture 
on the slide too large to be 
4. Do not mount the slides in 
a slovenly, inartistic manner. 
5. Do not use flourishes in 
writing on the varnished slides. 
6. Do not reduce the written 
or printed matter so that it 
cannot be read in the screen 
7. Do not leave the slides 
unmarked and expect every 
chance operator to insert them 
properly at railroad speed. 
8. Do not leave the lantern 
slides unlabeled, for no one else 
can make the best use of them. 
9. Do not store the slides in a 
miscellaneous heap.


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