...1013. — Daguerre's process — attempt to imitate. Requisites: ist, very susceptible paper ; ind, very perfect camera ; 3rd, means of arresting further...dried, and again exposed. The darkened half remained durk, the white half white, after any exposure, as if they had been painted with sepia.' " 'Jan. 30,...

...— attempt to imitate. Requisites—1st, very susceptible paper—2ud, very perfect camera—3rd, means of arresting further action. Tried hyposulphite of soda to arrest the action ot light by washing away all tho chloride of silver or other silvering salt— succeeds perfectly....

...process. Attempt to imitate. Requisites — 1*' very susceptible paper. 2d very perfect camera. — 3d means of arresting further action. — Tried hyposulphite...by washing away all the Chloride of Silver or other silvery salt — succeeds perfectly. Papers half acted on, half guarded from light by covering with...