19G I'HE GEOLOGIST. 



gypsum iu marl of a like colour : 6. sovonty-iive foot of fiuo-g-rainocl 

 varie^mted samlstoue : 7. a bod of sulphate of soda, from a few inobos to 

 eio-ht or uiue feet tliicli ; S. sovouty feet of blue soliistose marl, with 

 veins of o-ypsum : 9. auother bod of sulphate of soda, varying in 

 thickness from a few inches to forty or lifty feet ; 10. about seventy- 

 five feet of blue clay aud gypsum: 11. thirty to forty foot of a tine- 

 grained argillaceous sandstone, red and green : 12. a thin layer of 

 common sea-salt mixed with clay: lo, tifty feet of green and red 

 sandv marls : 1-i. twenty-tive 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. 



JBmssels Tertiary and Fossils — Graiiendael — Lael-cn — Fossil jjalm-nuts 

 and mod, pierced bj/ the Teredo — Fossils having the odour of the Frimeval 

 Seas— Ftalian Eartliquahes— Singular relation existing hetween magnetic 

 observations and Sarthquales — Startling hypothesis projjosed to explain 

 Geological phenotnena — Terrestrial magnetism — Farthquahes again^ 

 Novel production of artificial Coal and Anthracite. 



VuTxisG the five or six years I was occupied in Sfieutiiic pursuits at the 

 University of Brussels, I employed various means to make the acquain- 

 tance of. and to be ou good terms with, the workmen employed in clear- 

 ing away tlie sandy strata which surrounds the town; and especially 

 with those occupied iu levelling a great part of the Faubourg de 

 Sclmerbeelc. Erussels. like Home, is built upon seven hills, so that 

 the works of which I speak often attained a considerable depth, 

 allbrdiug many an opportunity of noting the exact disposition of the 

 strata and the fossils they contain. By sundry promises of 

 /(//•() 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. 



luthis manner I got hold of a good deal of rubbish, such as curiously 

 shaped stoucs, clotted sand, ditierently coloured Hints, Sec. ; but I soou 

 found myself in possession of some very rare and curious specimeus, 

 which even the Professors of the Vniversily looked upon with 



