Free and Discounted Ebooks
Join 130,000 readers! Get our ebook deals straight to your inbox.

Scientific American Supplement, No. 401

Sept 8, 1883

Cover image for

Download


Author: Various Authors
Published: 1883
Language: English
Wordcount: 35,366 / 114 pg
Flesch-Kincaid Reading Ease: 67.1
LoC Category: Q
Downloads: 635
mnybks.net#: 361
Origin: gutenberg.org
Genres: Periodical, Science
Excerpt

ttled on the subject and carefully dusted the negative, as well as placed it in situ for reproduction, the next thing required is a suitable collodion, and the following will be found all that can be desired:

TRANSFER COLLODION.

Cotton. 3 drachms. Iodide of cadmium. 65 grains. Ammonium iodide. 25 " Bromide of cadmium. 19 " Ammonium bromide. 11 " Alcohol. 15 ounces. Ether. 15 "

The plate thoroughly cleaned and coated with the collodion is now transferred to a bath, as follows:

Nitrate of silver (common) 25 grains to the ounce.

Made slightly acid with nitric acid.

After sensitizing, the plate is exposed in the usual way and taken to the room where pictures are ordinarily developed, and quantum suff. of the following poured into the developing cup to bring out the image:

DEVELOPING SOLUTION.

A Winchester of water, i.e. 80 ounces. Protosulphate

SUBSCRIBE TO MANYBOOKS 

FREE EBOOKS 

Join 120,000+ fellow readers! Get Free eBooks and book bargains from ManyBooks in your inbox. 

We respect your email privacy

(advanced)
login | register

User ID

Password

reset password

Author of the Day

Martha Conway
Martha Conway grew up in Ohio with her parents and six sisters.
Read full interview...