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able for both the hand and stand cameras. The largest 
hand camera recommended is quarter plate size. 
A variety of hand camera which is extremely useful for 
anthropological purposes is made in the form of binocular 
glasses. Watson and Sons, of 313, High Holborn, supply 
a very good instrument of this type in which the object 
photographed is at right angles to the direction in which 
the photographer appears to be looking. As many natives 
object to having a lens directed at them in the ordinary 
way this camera should overcome many difficulties, and 
enable many important pictures to be got which could 
not otherwise be obtained. The instrument referred to 
is a stereoscopic camera, but if not wanted as such one 
of the lenses may be covered, and only one picture taken on 
the plate which can subsequently be reversed and the other 
half used for another picture. With this and a stand camera 
the traveller will be well equipped for anthropological work. 
Sensitive Plates or Films .—The traveller going to tropical 
climates should take with him plates or films especially pre¬ 
pared and packed for such climates. The best results are 
got on plates. They are, however, very heavy, and some 
films may be taken for use when lightness is a desideratum. 
Cut films are the most satisfactory. An air-tight box with 
provision to contain some calcium chloride will be found 
very useful for abstracting moisture from plates or films 
which are being used and before packing them away. 
Apparatus and Chemicals for development .—As the travel¬ 
ler should develop his plates on the spot, wherever this 
is possible, he should provide himself with three or four 
papier-mache or celluloid dishes fitting into one another 
for sake of compactness, a developing lamp burning hard 
composite candles or night lights (Young’s night lights 
will be found to give plenty of light), two 3-oz. glass 
measures, some rubber tubing and spring clips. Soup 
plates, empty plate boxes coated with celluloid varnish or 
Brunswick black, and tea cups make useful dishes and 
measures to supplement the others in cases of need. 
The developers taken will depend on what the traveller is 
