IO4 THE A B C OF PHOTO - MICROGRAPHY 



may be had from all photographic supply 

 houses. This is a veritable boon to the 

 printer and lantern-slide maker. 



Photo-micrographic prints on glossy sur- 

 faced paper are vastly improved by " squee- 

 geeing " on a ferrotype plate, but the process 

 is so great a bugaboo to many that they fail 

 to follow it, and thus lose the best features of 

 such a print; but if properly done in all its 

 stages, nothing can be easier or more abso- 

 lutely certain of success than this sometime 

 dreaded method of finishing a print. In the 

 first place, the ferrotype plate itself is one of 

 the most important factors, if it be desired 

 to have it give continued and uniform good 

 service. In selecting it get the best, with per- 

 fect face and double thick, in order to pre- 

 vent wrinkling (so common with thin plates), 

 and have each sheet cut in half crosswise, 

 giving two plates 7x10 inches. Each of 

 these will hold at one time four prints 3 1 X4 1 , 

 or two 4x5, the most common sizes used in 

 photo-micrography. One print each 5 x 7 or 

 6% x 8% may be placed upon them if a larger 

 camera be used. We now face two problems, 

 however, each of much greater importance 

 than the choice of the plate itself. One is to 

 bring the surfaces of print and plate into 



