ON THE DETRITAL TIN-ORE OF CORNWALL. 203 
in the neighbourhood, but whence the ore was obtained is now 
unknown.* 
Between Higher Carnon and Restronguet-creek the largest 
known body of detrital tin-ore has been wrought—at intervals 
within my recollection—by five several parties of speculators in 
succession ; by the first two as open-works ;+ but by the other 
three in shaftst sunk deeper than the bed of the inlet, and by 
drifts in which the miners worked whilst laden ships sailed over 
head.§ 
About the middle of the navigable channel near Point,—where 
returning to the house he resumed his station at the table, and again 
occupied his basket in my bedroom. 
* * & * * % 
My pretty, engaging, and affectionate companion died whilst moulting ; 
and was buried beneath a flowering shrub, which he had loved to frequent. 
* € * * * * 
His grave was the last spot I visited in Brazil; and I still preserve the 
spray from which he carolled, and a feather of his wing. 
* A mass of Jew’s-house-tin—since placed in the Museum of the Royal 
Institution of Cornwall—was discovered, by Mr. Cuttance, at Trenower in 
Saint Martin, a south-eastern Parish in the (Lizard) Meneage district, some 
miles from any now-known habitat of tin ore, and far beyond the confines of 
this region. Dr. Jaco, M.D.; F.R.S.; MS.; Report of the Royal Institution 
of Cornwall, xlv, (1863), p. 18. 
+ The last of the open-works afforded a profit of about........£50,000. 
t The first of the Wining-works afforded a profit of about ....£28,000. 
The second ,, »  eventuated in a loss of about ....£16,000. 
TreBitcock, MicHELL, and Coax, Cornwall Geol: Trans: viii, p. 452, 
Table, xiv. 
§ The [open] stream-works ‘ were found sufficiently profitable to induce 
“the adventurers to extend their operations down the navigation nearly a 
‘‘mile and a half....[But] latterly the work has been carried on in another 
‘‘way;....a shaft was sunk in the firm rock of the shore, and a drift was 
‘‘extended from the bottom,....by which means the tin was obtained by 
‘“¢ removing only a small part of the great mass of mud which covered it.... 
‘¢ These operations have been sufficiently successful, to induce the adventurers 
‘to extend their works half a mile further down; two shafts having recently 
“been sunk through the mud in the middle of the creek, and secured by 
‘lining them withiron cylinders. The lower shaft...is surrounded by an . 
‘‘ artificial island formed of stones and rubbish, on which is erected a steam- 
“engine.” Tuomas, (R.), History of Falmouth, p. 31. 
° C 
