J 
250 ON THE DETRITAL TIN-ORE OF CORNWALL. 
Traces of ancient smelting-works (Jews’-houses) have been dis- 
covered in the various spots,—and described by the several 
authorities, —undermentioned :— 
LOCALITIES. AUTHORITIES. 
WESTERN DISTRICT. 
WMEKTROM, 56 gon boocad00c0KH0000 Ie Cras), Cornwall Geol: Trans: Vi, 
Marazion-green ..... ........ Edmonds, The Land’s-end District,* 
To ©) 
WESTERN-CENTRAL DISTRICT. 
Nh yame hii, HAM Muncie Be eI ois ots OG Mr. Joshua Fox, MS. + 
Gwennap .......+..eeeeeee0-- Hrancis (W.), Gwennap, a Descriptive 
Poem, p. 100, Note.} 
CENTRAL DISTRICT. 
Mawean ...... vecccecece-ees Michell (J.), Manual of Mineralogy, 
p. 75.§ 
WWI! po50 co000000 0000000 .e- Gentleman’s Magazine, xevi, p 125.|] . 
IbpNMbEIA/ Go00.40100 00c sce -eceee Hare, Mining Journal, September, 
1855.4] 
EASTERN DISTRICT. 
North Hill .....2c00..se00.-.- Rodd, (F.), Report of the Royal Institu- 
tion of Cornwall, xxxii, p. 58.** 
Block-moulds of stone have been met with, ‘in, at least two 
instances ; — 
LOCALITIES, AUTHORITIES. 
WESTERN-CENTRAL DISTRICT. 
Gwennap ....2-+.-ccrceeeooee Francis, (W.), Gwennap, a Descriptive 
Poem, p. 100, Note rt. 
EASTERN DISTRICT. 
North Hill ......csee+see0ee4 Rodd, (F.), Report of the Royal Institu- 
tion of Cornwall, xxxii, p. 58.tt 
* Near the river immediately west of Marazion, and at from three to 
six yards beneath the sandy surface, ancient walls of unhewn stone, rudely 
made pottery, charcoal, ashes, and slag mixed with grains of metallic tin, 
and,—within a short distance,—fragments of bronze, were discovered. 
Epmonps, Transactions of the Penzance Natural History Society, i, p. 348. 
The Land’s-end District, p. 9. 
+ Ante, p. 201, Note §. 
+ Ante, p. 206, Note. 
§ Ante, p. 226, Note. 
|| Ante, p. 227, Note. 
q ‘‘ From a Jews’-house discovered at Lanlivery by a tinner called John 
“Hare specimens of the ore, and the tin in a regular and refined state were 
“ secured, but no blocks were found.” Hxnwoop, (Gxo.), Lectures on Geology 
and Mining, ii, p. 11, Note. 
*x Ante, p. 232, Note +. 
+t Ante, p. 206, Note. 
tt Ante, p. 232, Note. 
