196 
THE GEOtOGIST. 
gypsum in marl of a like colour ; 6, seventy-five feet of fine-grained 
variegated sandstone ; 7, a bed of sulphate of soda, from a few inches to 
eight or nine feet thick ; 8, seventy feet of blue schistose marl, with 
veins of gypsum ; 9, another bed of sulphate of soda, varying in 
thickness from a few inches to forty or fifty feet; 10, about seventy- 
five feet of blue clay and gypsum ; 11, thirty to forty feet of a fine- 
grained argillaceous sandstone, red and green ; 1 2, a thin layer of 
common sea-salt mixed with clay; 13, fifty feet of green and red 
sandy marls; 14, twenty-five to one hundred feet of a red argillaceous 
sandstone alternating with pudding-stones of a similar colour. 
These strata, which are frequently dislocated, uplifted, irregular, 
and partially destroyed by water, furnish us with a tolerable idea of a 
triassic formation. 
Brussels Tertiary and Fossils — Granendael — Laelcen — Fossil 'palm-nuts 
and wood, pierced hy the Teredo — Fossils having the odour of the Primeval 
Seas — Italian Earthquakes — Singular relation existing letween magnetic 
observatiotis and Earthquakes — Startling hypothesis projmed to explain 
Geological phenomena — Terrestrial magnetism — Earthquakes again- 
Novel production of artificial Coal and Anthracite. 
DcmiNG the five or six years I was occupied in scientific pursuits at the 
University of Brussels, I employed various means to make the acquain- 
tance of, and to be on good terms with, the workmen employed in clear- 
ing away the sandy strata which surrounds the town ; and especially 
with those occupied in levelling a great part of the Faubourg de 
Schaerleek. Brussels, like Eome, is built upon seven hills, so that 
the works of which I speak often attained a considerable depth, 
affording many an opportunity of noting the exact disposition of the 
strata and the fossils they contain. By sundry promises of 
faro and cigars, I prevailed upon several workmen to bring to me 
everything " curious-looking " that they happened to meet with in 
their work of excavation, or to send for me immediately if the 
treasures they dug up were too large or too heavy to be transported 
to my abode. 
In this manner I got hold of a good deal of rubbish, such as curiously 
shaped stones, clotted sand, differently coloured flints, &c. ; but I soon 
found myself in possession of some very rare and curious specimens, 
which even the Professors of the University looked upon with 
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