1885.] 



MICKOSCOPICAL JOURNAL. 



225 



I 2-ounce measuring glass, - $0.25 

 I Minim measuring glass, - - 0.25 

 3 Developing trays (for 4X5 



plates), - - - - $0.60- — 0.90 

 I Ruby lantern, - - - 0.75 — 6.00 



I Negative rack, 0.50 



I Scales and weights (Apoth- 

 ecary's), 1. 00 



I Camel-hair dusting brush 



(flat, 2 inches wide), - - 0.50 

 I Medicine dropper, - - - .05 



Trays. — The best developing trays, 

 because the most durable, are made 

 of ' ebonite,' or hard rubber. They 

 are somewhat more costly than those 

 made of japanned iron, but they are 

 well worth the difference in price. 

 Those who intend to do considerable 

 photographic work will do well to 

 use trajs large enough to hold two 

 plates at one time. It is a great con- 

 venience and saves much time in de- 

 veloping, fixing, etc. 



Glass or porcelain trays are also 

 used. Japanned iron trays are quite 

 likely to rust after a time, and finally 

 they will leak. They may then still 

 be used by coating them with par- 

 affin, by melting a piece and flowing 

 it over the bottom of the pan, which 

 effectually stops the leak and protects 

 the metal. 



The Ruby Lantern. — There are 

 numerous forms of lanterns especially 

 designed for the dark room. The 



Fig. 31 — Carbutt's Lantern. 



most elaborate is Carbutt's ' Multum 

 in parvo lantern,' illustrated in figs. 31 



and 32, which is to be highly com- 



FiG. 32.— Carbutt's Lantern. (Open.) 



mended. The price of this lantern is 

 $6.C)0,but it can be applied to many im- 

 portant uses. It is about nine inches 

 square by fourteen inches high, and 

 has in front a large ruby glass, giving 

 a safe and abundant light for devel- 

 oping. On the one side is an opal 

 plate, useful for examining plates 

 after fixing, and on the other side a 

 door opens to permit the direct use of 

 the lamp-light. A silvered reflector 

 within can be operated from the out- 

 side. There are other good features 

 about this lantern, and altogether it 

 is doubtless the best one made. This 

 lantern is used as the source of light 

 in Scovill's photo-microscopic appa- 

 ratus. 



Next to Cai'butt's, and probably 

 quite as good for all practical pur- 

 poses, is the ' excelsior ' lantern de- 

 vised by Mr. Walmsley, shown in 

 ^%- 33* The price of this lantern 

 is only $3.50. It is a very practical 

 lantern, and deserves to be exten- 

 sively used. 



Another very excellent lantern is 

 Scovill's ' Non-actinic dark-room lan- 

 tern,' illustrated in fig. 34, which 

 is sold for $2.00. This lantern is 

 glazed with orange-colored glass ; 

 the light is said to be far more pleas- 

 ant to work with than ruby light, 

 and at the same time quite as safe for 

 the plates. We cannot speak from 

 experience in this matter, but we 



