1872.) The Amorpholithic Monuments of Brittany. 443 
geologists, and remain as hard nuts to crack for future 
speculators. I have been permitted to extract the following 
from the MSS. of Mr. Lukis, sen. :—‘‘ Over this district 
(7.e. about Carnac) the surface of the ground produces red 
pebbles, or worn stones, which at first sight resemble red 
jasper, but they are evidently belonging to the alluvial of 
‘the neighbourhood, and have eroded angles and surfaces of 
a peculiar nature, resembling that of artificial rubbing by 
the hand of man.’ In a note written to me by Dr. John 
McCulloch, he says, ‘I can make nothing of these, unless 
they are of barbaric art.’ These stone pebbles of Carnac 
and its neighbourhood had also occupied the attention of 
Dr. Buckland, who likewise considered them as the work of 
man. 
‘Mrs. Buckland, his widow, gave me several of them, 
which had been the subject of much conjecture, and which 
she said the learned doctor had shown to Chantrey, who 
endeavoured to persuade him that these might have been 
used for rude sculpture, in like manner as the bits of white 
sandstone grit were used by himself when he wished to rub 
the folds of garments during his employment. 
** As these stones are found strewed about the neighbour- 
hood of the menhirs of Carnac, they are given to travellers 
by the native guides as relics left by devotees at the base of 
the alignments. These remarkable pebbles differ from those 
on the neighbouring beach, and are derived from a different 
source: they are polished usually on all their faces, and 
have a strong inclination to wear down in a rhomb, rather 
than, like rolled pebbles on the beach, into round or nodular 
form. Some appear to flatten on both sides, and become 
pitted on both surfaces, as stones of silex do when acted on 
by Eolian force mixed with sand.” 
The St. Barbe lines are not a very remarkable group; 
here traces of three lines exist for a distance of three hun- 
dred yards. A few of the stones at the head of these lines 
are of great bulk, the two largest measuring 14 ft. x 12 ft. 
by 7 it. and 14 it. x rr ft: x- 4 ft. 71. respectively: 
A short distance to the west of these alignments are four 
stones, which may indicate vestiges of a circle, but they are 
so doubtful as not to be included in the plan. 
Not far from the St. Barbe lines are some conspicuous 
stones near the mill at Plouharnel; they are called ‘‘ Les 
trois pierres du vieux moulin ;” the largest is prostrate, and 
measures 16 ft. long x x1 ff. x 5 ft. “The two others 
standing are respectively 12 and 8 feet in height ; they seem 
to have once formed the head of a series of alignments. 
