a short distance able implements of modern warfare. through the gallery, we came to the foot of a ladder Homemade Celluloid. Prominent among large search lights at the Fair forty-two feet in height. H6 started up, I followed The following formula makes a substance as trans- may be seen the exhibit… … Fig. 4.- is 5 feet. The mirror, which is of silvered saponifying with the aid of alcohol the COURSE LIGHT PROJECTOR glass, has a clear working diameter of 5 feet, •fraction of tar oil which boils between 190° with a thickness of about % of an inch. It is carefully j close behind ; at the top we…
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