Photographic Notes. DS, 
of the microscope does not affect in any way the beauty of the 
image, and it renders the work of the operator much more easy. 
Operating without the eye-piece, it is necessary to have a camera 
which can be extended five or six feet, while with the eye-piece it 
is possible to use a camera of from ten to twelve inches. For 
lighting he makes use of a paraffin lamp with the largest possible 
wick, placed about six inches from the table of the microscope. 
Between the lamp and the object is placed a condensing lens, so 
as to concentrate the light upon the object to be reproduced. The 
body of the microscope being horizontal, the little camera is 
brought near, the eye-piece introduced into the hole for the lens of 
the camera, and this portion covered with black velvet, so as to 
exclude all accidental light. 
Dr. Puiprson, in the Picladelphia Photographer. 
Fixing and Toning Bath—In a recent number of the IVochen- 
blatt, Dr. Stolze has published the following formula for a bath, 
which fixes and tones prints at the same time :— 
Hyposulphate of Soda ee sae ee Suparts: 
Chloride of Sodium wis ahs SERS «Vis: 
Alum ane moe ts sale J: eta 
Sulphocyanide of Ammonia des al et 
Water oe scr se ee OLLOLZOO.. 
Developing Bath. 
NiO ni: 
Pyrogallic Acid... ee = ina Glee parts: 
Sulphite of Soda... ate Sad ae TOOL a5 
Dis. Water Aly oh ee Boe ODOR Mas 
Nios.2: 
Carbonate of Soda aes sas on. SOupacts: 
Dis. Water : : 1Goo!.: 
Mix one vol. of No. 1 with two Vols. of No. 2. 
L Amateur Photographe. 
Combustible Photogenic Powder.—M. Johannes Gzedicke, 
chemist, of Berlin, and M. Adolf Miethe, of Potsdam, have taken 
out a patent for an improved process for a magnesium light suit- 
able for Photographic work. The composition which they recom- 
mend is as follows :— 
Chlorate of Potash ou Sus Pe Le pants. 
Magnesium in Powder... be: ee TON 
Prussiate of Potash ih i Sane I as ne 
Or 
Chlorate of Potash om Set peo. 
Magnesium in Powder _... ate Bren DE Gs 
Amorphous Phosphorus ... Ae err ets, 
