432 Correspondence — R. Etheridge, jun. — B.. Gardner, jun. 



The remainder of the teeth, in this collection belong to Cladodus, 

 CocJiliodus, Helodus, Petalodus, Pleurodus, and Pristodus, many of 

 which fishes are also found in the Upper Coal-measures, and there- 

 fore existed in both waters. W. J. Bakkas, M.E.C.S.E., etc. 



PALEOZOIC STARFISHES. 



Sir, — Will you allow me to add another Palseozoic Starfish to your 

 "very excellent list given in the January number of the Magazine, 

 and which you have probably overlooked. I refer to the genus 

 Cribellites, G. Tate (C. carhonarius, G. Tate), Proceedings Berwick- 

 shire Nat. Field Club, v. p. 71, obtained from a Sandstone in the 

 Carboniferous Limestone series, near Shilbottle, Alnwick. 



Edinburgh, August 10, 1874. E. Etheridge, Jun. 



PROTOGINE. 



Sir, — In a very recent number of the Academy mention is made 

 of a fossil, in the Museum at Turin, of considerable interest : a frag- 

 ment of protogine containing remains of plants, which are supposed 

 to prove the sedimentary origin of that rock. But may not the so- 

 called Protogine be a sedimentary rock formed of the elements of 

 Protogine, and whose history is similar to that of some of the varieties 

 of the so-called Arkose. and named by some French geologists granite 

 regenere or recompose ? Mr. Scrope, in his excellent description of 

 the volcanic district of Central France, speaks of such a rock not 

 easily distinguished from the Granite, of whose elements it is com- 

 posed, and on which it lies. There is an example of this exposed in 

 a quarry above the village of Eoyat, near Clermont-Ferrand. 



Many granites may well be supposed to have had a sedimentary 

 origin — for the ultimate analysis of certain sedimentary rocks agrees 

 very closely with that of granite — but it is scarcely conceivable that 

 they should still retain any such proof of such an origin as that 

 which this fragment is said to possess. If this should meet the eye 

 of Mr. ScrojDe, I would venture to ask him whether the fragment 

 referred to may not improbably be supposed to belong to a rock 

 whose origin is similar to that of the reconstituted Granite of the 

 Limagne of Auvergne. 



BULTHY [I ILL, MiDDLETOUN, EOBERT GaRDNER, JuN. 



Welshpool, July 29. 



Cape Town. — On June 30th an earnest effort was made by Mr. 

 Fairbridge, Mr. C. Watermeyer, Mr. Dowl'^g, Mr. Solomon, and 

 other influential members of the House f Assembly, to induce 

 Parliament to appoint a Governmen Gy. logist for the Colony. 

 After an animated discussion, on the motion being put, twenty-three 

 members voted for the apy '; ' ent, and twenty-four against. A 

 little more pressure next ljy\^ . ought to insure a good majority 

 in favour of the ajipointmf r, jh a rich and important geological 



region as the Cape of Gv. . lope ought no longer to remain 

 unexplored, or only in the hands of amateurs. 



