46 



PHOTO-MICEOGRAPHY 



5. Whenever you tone, wash, or fix your prmts see they are kept well moving 

 about and that there are no air bubbles about. 



6. Remember over-toning produces mealiness, and under-toning a reddish (brick- 

 red) appearance. 



7. Do not let any toning formula be too cold. Keep it, say, always about 60° F. 

 and certainly not lower than 57° F. 



Albumen prints cannot be polished in the same way as Nikko paper — at least, not 

 without the use of a special solution : which in our hands is not often a success. If 

 it is desired to polish them they must be enamelled. Solutions are sold for this 

 purpose with full directions. 



Printing-out paper may also be used for prints from photo-micrographic negatives, 

 but they mostly have to be exposed in daylight. Full directions are given with these 

 papers, which are made by several firms. We confess to have a special liking for 

 that prepared by Otto Scholzig or by the Ilford Company. There is also an 

 excellent class of paper sold by the Paget Prize Plate Company, called collodio- 

 chloride, but it requires a little careful handling. Full directions are given with each 

 packet. 



