PHOTOGRAPHY 



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adapted to the sliding frame, i. On each side of the sliding 'door that supports the 

 lens, a, there is within the camera a small hinged-table, r, supported by a bracket, e. 



These two tables serve to support the bottles that contain the solutions necessary to 

 be applied to the glass plate after its exposure to the lens. 



For supporting any of these camera obscuras, tripod stands are employed ; these 

 are n ;w made in an exceedingly convenient form, being light, at the same time that 



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they are sufficiently firm to secure the instrument from any motion during the opera 

 tion of taking a picture. 



The true photographic artist, however, will not be content with a camera obscura of 

 this or any other kind. He will provide himself with a tent, in which he may be 

 able to prepare his plates, and subsequently to develop and to fix his pictures. Many 

 kinds of tent have been brought forward ; but we have not seen any one which unites 

 perfectly all that can be desired, within a limited space, and which possesses the 

 great recommendation of lightness. 



Smartt's photographic tent, however, appears to meet nearly all the conditions required. 

 In this tent an endeavour has 1 been made to obviate many of the inconveniences com- 

 plained of, especially as to working space, firmness, simplicity, and portability. It is 

 rectangular in form, is 6 feet high in the clear, and 3 feet square, Jiffording table space 

 equal to. 36 inches by 18 inches, and ample room for the operator to manipulate with 



