Reeiedeat tite Ey eee 
an i i i 
Ee ee a eS hee 
oF Ss ge fe 5 
THE RISE AND PROGRESS OF PHOTOGRAPHY. 147 
Both England and rare — laid claim to be the cradle of 
this giant baby, and both ¢ s have about the same claim 
to its rapid development, bevel sich asi has the honor of 
having brought most of the experiments, both in its earliest and 
later stages, to a practical issue, yet the names of Herschell, 
Wedgewood, Davy, and Fox Talbot will always hold a prominent 
place wherever the nine of photography is proclaimed. 
The mention of th neiples of the camera obscura or dark 
chamber is the earliest; reliable record we have concerning the 
future discovery of the invention of photography. It was dis- 
covered in 1544 by Giovani Baptista della Porta, a Neapolitan 
monk, who on seeing the objects from without reflected upon the 
white walls of his cell through a hole in the shutter, became the 
means of giving hs i world a pleasing and as it has since proved 
a valuable instru 
The next {hing we saa record of is the chloride of silver, 
ppeer- 
1777, just 233 years after Porta’s discovery, the learned Scheel, 
a native of Swe en, isieimsiibe ed with this substance in another 
seem and remarks that paper prepared with chloride of 400d 
i were called Eietisteoer still exist, research 
into the doi — ewood sat the 
fact that as aoe as 1791 as ex nting with one, a 
