bee 
‘154 Scientific Intelligence. . [Ave. 
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4 
and is, therefore, analogous in its constitution to the compound of 
-chlorine and olefiant gas, sometimes called chloric ether.—(Institution 
Journal.) 
Il. General Return of Copper raised in Great Britain and Ireland in One 
Year ending June 30, 1822. 
Tons 
Comwallis [NF 2000 Qik Sasso Joab. vada ad 9140 
Treland, and sundry parts of England, sold 
Bt) Swansea. sq ciscleisit« «pee ae tarde 388 
ME von s..<ciche 3 oe ieee eh eT sn twat 532 
Sundry ores purchased by private contract.. 184 
Anglesea (probably) ......+0.-e+0--0e-0% 600 
10844 
Produce of Copper Ore in Cornwallin Six Months ending June 30, 
1822, from 67 mines, 52125 tons. 
Particulars of the six principal mines. 
Ore. Copper. 
Consolidated Mines......... 6772 tons 575 tons 
Dolcoath:. ..5.. .s teace. gaae 5146 $52 
Waited Mings: 3.05 . 5 oe eva 3342 313 
Wheal Abraham, &c.,....... 44.17 302 
Pembroke we eats pers ear > 3215 251 
WYESEEEDY.- n00e pers rests 2371 249 
25263 2042 
6] other‘mimes .. vos... es 26862 9591 
52125 4433 
Produce of the ores, 82 per cent. 
Average price of copper, 108/. 15s. per ton. 
III. Attraction of Moisture by Peroxide of Copper. ; 
According to M. Berzelius, this oxide attracts the humidity of th 
atmosphere very rapidly: it is reduced so readily in hydrogen gas that 
if a piece be strongly heated, but not to redness, and put into a bottle 
of the gas, the oxide takes fire, and is reduced, and water trickles down 
the sides of the vessel. According to the weight lost in this mode of 
reduction, peroxide of copper appears to he. composed of 
GR DER «35 sini ors * sen * 4p SABO Bets 100-0 
ORYPER. nates ne ae Be Fee Meteor (AF ta: one 25-272 
(Annales de Chimie). 
1V. Influence of Green Fruits upon the Air. 1 
M. Theodore de Saussure has given the following as the results of 
his experiments on this subject : ; 
Green fruits have the same influence as leaves upon the air both in 
sunshine and darkness ; their action differs only in intensity, which is 
greatest in the leaves. During the night they cause the oxygen of 
their atmosphere to disappear, and they replace it by carbonic acid 
