20-4 THE GEOLOGIST. 
same parisli, and feel satisfied tl)ey are the actual results of lightning ; 
and wliilst preparing this paper, I have come across a flagstone on the 
northern side of the Marjleboue Road, running on the south side 
of Park Square, Regent's Park (two-thirds of the way towards the 
eastern end of the square), which contains one of the finest examples 
I have yet seen. The age of these flags I am unable to determine ; * 
but at any rate, by thus drawing attention to the subject, I hope it will 
lead to the discovery and preservation of fossil specimens, even in the 
oldest sandstones, for there is no reason to doubt the existence of 
electrical influences at the very earliest ages of our planet. 
LOCALITIES OF FULGURITES. 
Bkitain.— Fossil in sandstone flags Dr. Gibb. 
Drigg, Cumberland Mr. E. L. Irton. 
EsKMEALs, in larger sand banks near the same placet. Mr. Richd. Falcon. 
L vscASHiiiE, coasts of Greg and Lettsom. 
Cakisbrook, Isle of Wight Dr. Bigsby. 
Dover, Chalk Cliffs t Mr. S. J. Mackie. 
Germany M. Ribbentrop. 
Massel, Silesia Henuan. 
La Senke, Heath of Paderbarn, Westphalia . . . Dr. Hentzen. 
NiETLEBEX, near Halle on the Saale. 
Regenstein, near Blankenburg. 
Pn.LAu, near Konigsberg, Eastern Prussia. 
Dresden, vicinity of Dr. H. K. Fiedler. 
TuARiE Country, Africa. 
Natal do. 
Lake of Two Mountains, Canada § Dr. Gibb. 
Pinnacle of Toluca, Mexico Humboldt. 
Maldonado, Rio de la Plata Mr. Darwin. 
Bahia, Brazil. 
* These flagstones are probably fi-om the lower carboniferous rocks of Yorkshire ; 
at'least, nearly all London is paved with such flags. — Ed. Geol. 
t Near this spot are the remains of an old Roman encampment ; and occasion- 
ally coins, with other objects of interest, are turned up. 
t Thi^ instance referred to by Dr. Gibb was a case of a double or furcated 
perforation in a thick layer of clay covering the Castle Hill at Dover, made by a 
powerful stream of lightning, which, when a lad, I saw strike the ground at an 
elevated point. It can scarcely be called a ful^irite, as the clay was only coated 
on the surface with bluish-grey beads and grains, powdered, as it were, like the 
bloom of a peach. The ])erforations forked at about nine inches from the upper 
suiface of the soil, apparently divided by one of the numerous angular fragments 
of flint which abound in the subsoil, and were of sufficient dimensions for me to 
put my arm with my walking-stick into them. The branches had divergent 
directions, as nearly as I can remember, of 30° or 3-5° on either hand from an 
imaginary intermediate vertical line. Their forms were irregidarly angular, with 
ridges, as in the fulgin-ites, but they were of far larger diameter than any of the 
latter objects I have ever seen.D — S. J. M. 
§ When strolling over the sand-banks of the hills at this place, when a youth, 
I discovered substances which I now believe were these tubes. 
