—— cyanide of potassium, 254.
—— improvement in collodion, 406.
—— mounting positives on cardboard, 332.
—— multiplying negatives, 110.
—— soluble cotton, 571.
—— Towgood's paper, 110.
S. (H. E.) on Maydenburi, 516.
S. (H. F.) on Bale's work on libraries, 589.
—— Marston and Erasmus, 513.
Shirley (Ev. Ph.) on factitious pedigrees, 275.