275m 
Photographic Notes. 
Simple Method of Gelatinising Prints.—The glass plate, well 
cleaned, and rubbed with a little tale in powder, then wiped; the 
edges are coated all round with gum arabic, which is allowed to 
dry. The plate is then coated with collodion, and it is useless 
to impart to it the motion used in operating with wet collodion ; 
the plate is simply placed on end, so that the collodion drains 
from the lower end. ‘This manipulation is performed the preceding 
day. On the next day dissolve the gelatine by placing it in a wide- 
mouthed vessel filled with water ; this vessel is heated over a water- 
bath. As soon as the gelatine is dissolved the solution is poured 
into a flat plate, and on it are floated a piece of strong white paper, 
somewhat larger than the glass plate, and at the same time a print. 
In about half-a-minute the print is to be removed and placed the 
image-side down, on the collodionised side of the glass plate ; a 
sbeet of paper is placed directly over it, press to remove the 
gelatine in excess. ‘This isreceivedin the dish. ‘The plates are 
now exposed in the shade for two hours, then in sunlight for two 
or three hours. When desiccation is completed, the paper and 
print are detached from the glass plate. Should there be no 
sunlight, recourse may be had to artificial heat. To mount the 
print, prepare a solution of gelatine sufficiently thick, using hot 
water ; with this solution, and with the aid of a brush, coat the 
edges of the back of the print, which is to be quickly placed 
on cardboard and pressed by means of a fine cloth. The image 
adheres very strongly.—P/oto. Archiv. 
The Enamel Process of Mr. Reinhardt.*— Dear Sir,—On my 
return from the country, I found yours of the 8th inst. I have 
myself been troubled with having the photos stick to the glass 
while enamelling, but have eventually overcome it. In the first 
place it is necessary to use collodion made with good alcohol and 
ether ; I use five ounces of each and seventy grains of gun cotton. 
The plates should be at least half-an-inch wider than the picture, 
and one inch or more longer, for this reason: To squeegee the 
picture and paper down on the plate it is necessary to hold the 
paper in its place by pressing down on it with the fingers, but 
these should not touch also the picture below the paper. There- 
fore, by having both the plate and the paper larger than the 
picture, it leaves a margin sufficient to hold it in place without 
* In reply to a letter which appeared in the Phzladelphia Photographer. 
