454 Mr. Henwood on the Rocks and Veins 
the case with only 42 of them; and the remaining 48 are 
heaved in similar directions. Thus 46°6 per cent. counte- 
nance the supposed law, and 534 per cent. contradict it; and 
consequently the evidence against it preponderates. 
Suppose, then, a series of heaves of the same lode, in the 
same direction, by different cross-veins: these must therefore 
be occasioned by successive steps; or the masses of rock 
which contain it must be supposed to have suffered a series 
of elevations each greater than the preceding; the first step 
being next to the unmoved rock. Thus, at Polladras Downs 
(0), a series of elevations, successively increasing as we go 
westward, will afford that superficial explanation which we 
have already seen (G.) is contradicted by a more minute in- 
vestigation. A similar succession of movements will also apply 
to the Old lode at Poldory (United Mines) (zm), and a like 
explanation will apply to Wheal Falmouth. 
At Cook’s-kitchen (c), a system of elevations augmenting 
as they are followed eastward will produce the same apparent 
coincidences; and similar ones are also found in Wheal Jewel, 
Wheal Friendship, and in the heaves of the south lode at 
Cardrew Downs (e, B). 
But when the heaves by successive cross-veins are in op- 
posite directions, certain masses of rock must be heaved, and 
others, interposed amongst them, remain in their original 
positions ; as, for example, at Herland (7), where this assump- 
tion requires that the portion contained between the Half- 
penny flucan and Chambers’s western flucan shall not have 
been moved; whilst, at every cross-vein west of the former, 
there shall have been, successively, an elevation more consi- 
derable as we go westward, and at every cross-vein east of 
the latter, a similar one, still increasing in magnitude, as we 
go eastward. 
At Wheal Vor (/), we may imagine the heaves by the two 
portions of the eastern cross-course to have been attended by 
depressions westward; but then we must require that the part 
between Woolf’s and Carleen cross-courses shall have re- 
mained stationary, whilst the part west of the latter has also 
subsided. But it must still be remembered that these move- 
ments will produce only an apparent agreement, and explain 
only one set of phenomena; for when we compare them with 
the distances of the heaves, the resemblance vanishes. 
These movements in opposite directions, and stationary 
masses interposed between others which have suffered con- 
tradictory motions, certainly require a liberal indulgence of 
imagination, 
But whether the two cross-veins be wholly separate and 
