ON THE DETRITAL TIN-ORE OF CORNWALL. 237 
Perran-ar-worthal,* Feock,t Kenwyn,t Ladock,t Probus,§ Creed,§ 
Gorran,|| Saint Ewe,§] Saint Austell,** Saint Stephens, Lux- 
ulion,}} Lostwithiel,f{ Saint Columb-minor,§§ Cardinham,]|||| and 
North Hill ;1 but so sparingly that it bears no assignable propor- 
tion to the other ingredients. 
Of the specimens hitherto discovered, the fragments of one 
amounted to an ounce*** (Troy), another has weighed nearly (0°7 
oz.) sixteen,{{} a third (0°6 oz.) more than eleven*** penny weights, 
and many other have been as large as pease. Much of the gold 
has occurred in small—and sometimes rounded—nuggets, thin 
flakes, and slender threads; but the greater part is in crystalline 
granules}{t and in dust.*** Detrital gold is, in quality, as superior 
* Francis, (W.), Gwennap ; a Descriptive Poem, p. 94. Ante, p. 205. 
t¢ Michell, (J.), Manual of Mineralogy, p. 2. Henwood, Cornwall Geol: 
Trans: iv, p. 66. Ante, p. 205. 
~ Hawkins, (Sir C.), Cornwall Geol: Trans: i, p. 235. 
§ Borlase, Natural History, p. 214. Ante p. 225. 
|| Captain James Knight, of Menadue in Luxulion, MS. 
q Borlase, Natural History, p. 214; Journal of the Royal Institution of 
Cornwall i, (No iv), Supplement, p. 35. 
*® “Stream-tin from Pensagillis is remarkable on account of the native 
gold, which now and then is met with in it, and found, though very rare, in 
pieces of the value of two or three pounds sterling.” Knaprory, Mineral- 
ogical Observations, p. 12. 
Petherick and Martyn, London, Kdin: and Dublin Phil: Mag: xxxv, 
(1869), p. 323. 
tt Maton, Observations on the Western Counties, i, p.175. Henwood, 
Ante, p. 215. 
ty “In the Bayliff of Blackmoor, a M.S. in my possession, written by 
“one My. Beare, in Queen Hlizabeth’s time, there is an account of a Gentle- 
“man who at a wash of tin at Castle Park near Lostwithiel, took up out of 
‘the heap of tin certain fine corns, hops, or grains of Gold which they 
“ call Rux.” Pryce, Mineralogia Cor nubiensis,- -p. 52. 
- §§ Mr. John Nicholls, of Trekenning, Saint Columb, MS.; Ante, p. 220. 
||| Borlase, Journal of the Royal Institution of Comneneali i, (No. iv), 
Supplement, p. 35. 
qq MS. of the late Mr. Spoure, with which I am favoured by Mr. Rodd 
of Trebartha, and Mr. Edward Hearle Rodd of Penzance. Ante, p. 231, Notet. 
*** Borlase, Natural Hisiory, p. 214. 
++ Michell, Manual of Mineralogy, p. 2; Ante, p. 205; Notet. 
ttt Taylor, (C. Dyke), Proceedings of the Institution of Mechanical 
Engineers, (Cornwall Meeting), p. 162. 
E 2 
