( rns) January, 
PROGRESS IN SCIENCE. 
MINING. 
AxsouT a month ago, Mr. Robert Hunt’s annual volume of ‘‘ Mineral Statistics ” 
was issued from the Mining Record Office, being thus eatlier by nearly a 
couple of months than the corresponding volume for the preceding year. This 
advance has been effected by the zeal of the Keeper of Mining Records, coupled 
with a readiness on the part of most of our mine-holders to respond to his 
solicitations. Indeed, so far as the collection of the colliery-statistics goes, 
matters stand precisely as they did last year; that is to say, the returns de- 
manded by the Coal Mines’ Regulation A@ never come within sight of the 
Keeper of Mining Records, and, consequently, a special application has to be 
made to each coal-owner for the purpose of eliciting the needful information 
bearing upon the position of our coal-production. Even as regards the metal- 
liferous mines, the compulsory returns, furnished in compliance with the Ad, 
contain merely the quantity of ore raised; hence the percentage of metal, and 
the market value of the ore, have to be sought in other directions. From one 
source and another, however, Mr. Hunt manages to bring together a vast body 
of valuable information in his Statistical Annual, and this with the best 
possible guarantee that the information may be taken to stri@ly represent the 
true position of our mineral industries. The results of his labours during the 
past year may be epitomised in the following conspectus, which shows at a 
glance the amount and value of the mineral produce of the United Kingdom in 
1873 :— 
Tons. Cwts. Value. 
(Coeik 54 88 Go. Go Joc 127,016,747. 0 £, 47,631,280 
Iron ore 3 ao 86 04 1535773499 O 75573,6076 
(Copoyyse eis 45 56 oo oc 80,188 I0 342,708 
DMV ONES oo Gc oe 6a cc 14,884 17 1,050,835 
Lead ore AG 86 8a Ge 73,500 10 1,131,907 
PANS OVSISE He sc 30 15,969 oO 61,166 
MGR HAHMKSS Go Gg ac oF 58,924 3 351485 
Arsenic 46. Gc) S06. 8¢ 5.448 17 22,854 
IGN “oq bo 65 ac 1 4 68 
(Coles 65 oS as oc ac oF 6 12 
Manganese . 5 00 oc 8,671 6 57,706 
Ochre and Umber.. 50° 6c 6,368 8 5,410 
Wolfram . af 49 19 526 
1 
ee fire, and sha e 1,750,000 0 656,300 
Salt sopmten cod ery aoen (ere 1,780,000 oO 892,500 
Barytes sc. or 10,269 II 7;:993 
Other earthy minerals esti- 
mated) ( a Si08¢ 
mMotalivalue? yon tere £59;479,486 
At a recent meeting of the Royal Geological Society of Cornwall, Dr. C. 
Le Neve Foster, Inspector of Metalliferous Mines for the West of England, 
read a paper on the Lode at Wheel Mary Ann, near Liskeard. This lode offers 
peculiarities of structure which deserve careful study by the mining geologist, 
for the sake of the light which they seem to throw upon the succession of 
changes that must have occurred in some of our mineral deposits. From Dr. 
Foster’s observations underground, and on specimens taken from various parts 
of the vein, he has been enabled to deduce the following history of its formation. 
