GG 
REPORT—1847. 
paratively short jaws. With reeard to the remaining genera, the 6 r^ diantwr 
1 >ointed out was the relation of the large canines of the lower jaw to theu[^jiw, 
n the Alligator these teeth pass into depressions on the palatal surface of the upper 
jaw, and are concealed from view when the mouth is closed: in thetrueCrwato 
the inferior canines rest in grooves or notches upon the outer margin of tbeuppcc 
jaw when (he mouth isclosed,and their entire crowns are exposed, rnthiscinneur. 
as well as in tlie festooned contour of (he alveolar border of the upper jaiv,t»tti At 
ilonllc crocodilian skulls exhibited by l^dy Iluhtings agreed with (no irueCrocoiKe 
and dtfTcrcd from the Alligators. 
I’rofeswrOaen then entered into a comparison between the fossil crocwlileeftbr 
eocene sands of Ilordlc, and the fossil crocodile figured in Btickhnd's' Bridpwttf 
Treatise* from the eocene clays of Sheppey, and showed that whilst ihisresemWel 
in the regular atCentiatiun of the snout and the compar.itively streight border 
miper jaw the existing crocodile of llornco {Croc. SchlegrUi,, the fossil trocoiliitw 
Hurdle more resembled the crocodile of cho Indian continent in the greater bealili 
of the muzzle, and the strong festooning of the Imrder ofthe opper jaw. 
Both the fossil species however were plainly distinct from their nearest ejistinj 
congeners; and ns Dr. Bucklaud had given to the Sheppey crocodile [Cncuiio 
♦V/icacpri) tlic name of the possessor of the rare specimen of that speeies, 
Owen pnmosed to cull the extinct species from llordle CronfUiu* HadisgaTi'® 
honour of the ficcnniplishcd Indy by whom the singularly perfect eJuiinpl»oftl'* 
apccics had been recovered and restored. 
It would seem that the (Vocodiiu/iIltuiingtia was not theonly specimen of Mnwi* 
from ihc Hordlc clifls. J)r. Maiitcil refers to “a fossil species of AlJigitct 
ror //ffNron;effi<«)descrihccl by Mr. Seitrles Wood, from a specimen of theltnwfj** 
und teeth found in ihc li oshwater beds at llordwell Cliff.” 
Professor ()wcii liad not seen this specimen, which, if it possess 
the genus Alligator, would indicate that what is now a peculiarly iiew-worW lofi”' 
liad once existed in Europe. 
(hr the Formation of Coal, Stc. Jixtract of 0 Utter from Prof. Bogusla'^*^' 
of Freslau, communicated by Prof. Powell. 
Dr. Goppiftg, now Hector Magnificus of the Royal University and Pi-esid«t«f 
7 *kTbwiety, has succeeded, after many yeai"*’experiments, in coDwrting 
tai>l« ,n the moist wat, (at a temperature of \40' to 210° Fahrenheit, which 
emplop however in order to accelerate the process), afterthe lapse of 0057 ^.'““ 
,,i M«|j or pynte.s, which often occurs in coals, he Ms 
produCTng the black colour peculiar to coal. He has also been able byhb 
cause \ enetian turpentine, produced from branches of th<V’i«M lark by dige*®®-® 
S® f insolubility of the fossil mins (such as retip^t; 
experiments, which I bare seen myscU, seem W 
y fnend that no very long geological period is required for the 
existing Thysicol Outline of a portion offati^' 
iiy A. C. Hamsay. I\G,S., iVof. of Geology in r»irersily CoU^f ^ 
...ill!?' of this paper was to explain the probable causes that gave 
Cardiganshire. Two 
tho " hoiizontal «nd vertical scale of six inches to a mile, 
Jinrllr f coa-stof Cardigan Ray. The district to 
®‘’'"Pos^d of a portion of lower Silurian strata h'ghljt® 
witb tho **, by mitiierous valleys. It \vas shown that, in 
flhe exhibited’ in the sections, large 
®PP>ftg edge.s of which rise to the surf«ep\ ir^re nnre contiltcoin 
