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

Scientific American Supplement, No. 455, September 20, 1884

Cover image for

Download


Author: Various Authors
Language: English
Wordcount: 39,294 / 129 pg
Flesch-Kincaid Reading Ease: 37.8
LoC Categories: AP, Q
Downloads: 464
Added to site: 2004.11.17
mnybks.net#: 9553
Genre: Periodical
Excerpt

cal manuals, Dr. Kolbe's "Inorganic Chemistry," for example, it is also stated that arseniureted hydrogen is formed by the fermentation of the starch-paste employed for fastening the paper to the walls. It is perfectly obvious that the fermentation of the starch-paste must cease after a time, and therefore the poisonous effects of the paper must likewise cease if its injurious effects are caused by the fermentation. I do not think that arseniureted hydrogen could be formed under the conditions, for the oxygen compound of arsenic is in a state of combination, and the compound is in a dry solid state and not in solution and the affinities of the two elements--arsenic and hydrogen--for each other are so exceedingly weak that they cannot be made to unite directly except they are both set free at the same moment in presence of each other. Further, for the formation of this hydrogen compound by the fermentation of the starch, or by the growth of minute fungi, the entire compound must be b

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

Kathleen C. Perrin
Frequently wandering the stone streets of Mont Saint Michel in France as a tour guide has given author Kathleen C. Perrin a unique insight and special bond with the place. It has also allowed her to channel her passion for the place into her young adult historical paranormal series, The Watchmen Saga. In this interview she talks about her muse, how she retraces the footsteps of her characters to better understand them and the hardships of life in 15th-century France.
Read full interview...