32 SCIENTIFIC BOOKS PUBLISIIED BY 
The Useful Metals and their Alloys; 
ScofFren, Tniran, and others. 
Fifth Edition. 
8ro. Half calf. $3.75. 
THE USEFUL METALS AND THEIE ALLOYS, incliding 
MINING VENTILATION, MINING JUEISPEUDENCE 
AND METALLUKGIC CHEMISTEY employed in the conver- 
sion of IEON, COPPEE, TIN, ZING, ANTIMONY, AND 
LEAD OEES, with their applications to THE INDUSTBIAL 
AETS. By John Scoffren, William Trttran, William Clay, 
Eodert Oxland, William Fairbairn, W. C. Aitkin, and Wil 
liam VoSE PlCKETT. 
Gollins’ Usefnl Alloys. 
18mo. Flexible. 75 cents. 
THE PEIYATE BOOK OE USEFUL ALLOYS and Memo 
randa for Goldsmiths, Jewellers, etc. By James E. Collins 
This little book is compiled from notes made by tbe Author from the 
papers of one of the largest and most eminent Manufacturing Goldsmiths and 
Jewellers in this country, and as the firm is now no longer in existence, and the 
Author is at present engaged in some other undertaking, he now offers to the 
public the benefit of his experience, and in so doing he begs to state that all 
the alloys, etc., given in these pages may be confidently relied on as being 
thoroughly practicable. 
The Memoranda and Receipts throughout this book are also compiled 
from practice, and will no doubt be found useful to the practical jeweller. 
—Shirley, July, 1871. 
« 
Joynson's Metals Used in Construction. 
12mo. Cloth. 75 cents. 
THE METALS USED IN CONSTEUCTION: Iron, Steel, 
Bessemer Metal, etc., etc. By Francis Herbert Joynson. II- 
lustrated. 
“ In the interests of practical Science, we are bound to notice thia work ; 
and to those who wish further information, we should say, buy it; and the 
outlay, we honestly believe, will be considered well spent.” — Scientific 
Review.