324 
KANSAS CITY REVIEW OF SCIENCE. 
Last year the aggregate copper yield 
of Arizona Territory was 17,000,000 pounds, 
worth at New York rates 14^^ cents per 
pound, ii$i,465,ooo, and it is estimated at 
23,000,000 pounds for 1883, worth ^3.335.- 
coo. 
Professor Broadhead, former State Ge- 
ologist ot Missouri, endorses all the reports 
of great coal discoveries in Bates County, 
but says that the money expended in boring 
for oil there will all be wasted. 
Prof. J. W. Sanborn, Dean of the Agri- 
cultural College of Missouri, is conducting a 
series of experiments upon the yield of dif- 
ferent varieties of wheat and corn, the re- 
sults of which he proposes to publish in a 
series of Bulletins, for general distribution 
among farmers and others. 
August, 1883, will long be remembered 
for its earthquakes, tidal waves, cyclones, 
railroad and marine disasters, pestilences, etc. 
The Durango Smelting Works are receiv- 
ing twenty tons of ore per day from Silver- 
ton. 
Prof, Wm. H. Williams, for seven years 
principal of the public schools, of Browns- 
ville, Mo., has been selected as principal of 
the Lathrop public schools and will remove 
to that place very shortly. 
The sixth annual meeting of the American 
Society of Microscopists was held in Chicago, 
August 7th to xoth inclusive ; Albert McCalla, 
A. M., of Fairfield, Iowa, President, and D. 
S. Kellicott, Ph.D., of Buffalo, N. Y., Sec'y- 
The predictions of the U. S. Signal Service 
for August 2ist, included this: "For the 
Upper Mississippi Valley, generally fair 
weather, winds mostly westerly, falling bar- 
ometer, stationary or rising temperature." 
At 6 f . M. the most severe tornado of the 
season swept across Minnesota, destroying 
the town of Rochester and killing or wound- 
ing some sixty persons. 
ITEMS FROM PERIODICALS. 
Subscribers to the Review can be furnished 
through this office with all the best magazines oj- 
the Country and Europe, at a discount of from 
13 to 20 per cent off the retail price. 
The Scientific American Supplement for Au- 
gust 25th has a very interesting illustrated^ 
article upon glass-blowing by means of com- 
pressed air. The idea is not new, but its 
practical application on a large scale is con- 
fined to the establishment of the Appert 
Bros., of France. 
In the Electrical Review for August 30th. 
we find an illustrated description of a Multi- 
ple Switch-board with a capacity of 2,400 
lines, made for the Kansas City Telephone 
Exchange. The claim is made for the ex- 
changes using this Multiple system, that they 
give the most prompt and reliable service of 
any their equal in size, the average time in 
making connections being only ten seconds. 
It is a little remarkable that a similar switch, 
board made for use in London, England, is 
only equipped for 1,000 wires. 
The Humboldt Library, No. 47, presents a 
most valuable and interesting work, viz : 
The Childhood of Religions, by Edward 
Clodd, F. R. A, S., author of The Childhood 
of the World; octavo, paper, pp. S^- P"" 
15c. 
The Popular Science J/(7«M/y for Septembei 
begins with a clear exposition of *' The Germ. 
Theory of Disease," by Dr. H. Gradle, who 
explains the theory, defines the extent to 
which it has so far been found surely appH^ 
cable, and sums up the evidences on which 
it rests. Dr. Felix L. Oswald continues his 
pungent descriptions and recommendations 
of •' The Remedies of Nature " with a paper 
on " Asthma " and its treatment. In " Fire 
proof Building Construction" Mr. Williat) 
E. Ward describes and recommends a syste 
of building with iron and beton without wof 
which he has tried and found practicable a 
effective. 
