382 Correspondence — Prof. T. R. Jones — Prof, G. A. Lehour. 



GEOLOGY AND PALEONTOLOGY OF SUMATRA. 

 Sm, — You will much oblige M. Verbeek by inserting tbe sub- 

 joined Errata and Corrigenda. T. Kupert Jones. 



Stafp College, Yorktown, Surrey, 

 April ^th, 1876. 



Geol. Mag. 1875, New Series, Dec. II. Vol. II. (No. 136). 

 At page 478, lines 24-26, instead of " The lower siliceous schists," read. The lower 

 portion consists of marl-slates and siliceous schists ; the clay- 

 slates with auriferous quartz- veins, which were formerly con- 

 sidered to belong to the Carboniferous period too, belong to 

 another (older) period ; but the age is not exactly known, no 

 fossils having been found." 

 At page 482, line 26, /or Caroe read Baroe. 



483, ia Fig. II. for Salok read fcolok. 

 ,, for Ampato read Ampalo. 



Fig. III. for Goenang read Goenong. 



484, lines 9 and il^for Singkorah read Singkarah. 



485, line \0,for Goenoeng read Goenong. 

 line 23, /or Goeneng read Goenong. 



486, line 4, /or Capellan read Capellen. 

 Corrigenda for general list of Eratafor vol. for 1876. 



Geol. Mag. 1876, New Series, Decade II. Vol. III. (No. 142). 

 At page 169, line 7, /or Foraminiferse read Foraminifera. 

 ,, 169, last line, for rensselorite read rensselaerite. 

 „ 171, line 29, for Cannopora read Caunopora. 



THE CARRAEA MARBLES. 

 Sir, — By way of postscript to the summary of recent views as to 

 the age of these beds which appeared in the July Number of the 

 Geological Magazine, I beg to be allowed to mention the titles 

 of the following memoirs, which bring the question up to the present 

 date. These are : 



1. Part ii. of M. Coquand's " Histoire des Terrains stratifies de I'ltalie centrale, 



etc." Part i. of which formed the groundwork of my resume. This ap- 

 peared barely a month since in the Bull. Soc. Geol. de France, ser. iii. 

 t. iv. p. 126. 



2. " Considerazioni stratigrafiche sopra le rocce piCi antiche deUe Alpi Apuane " 



(Rome, 1875), by M. Carlo de Stefani. 



3. " Un brano di Storia della Geologia toscana a proposito di una recente 

 publicazione del S. Coquand " (Boll. del. R. Com. Geol. 1875, Nos. 5-6). 



In the two latter papers the Italian geologist announces the 

 discovery of fossiliferous limestones underlying conformably the 

 saccharoidal marbles. The fossils are not specifically determinable, 

 but they belong to the genera Ceritliium, Turbo, Bissoa, and 

 CJiemnitzia, and with them are associated crinoidal remains. Pro- 

 fessor Meneghini considers these fossils as being Triassic rather than 

 Carboniferous, and M. de Stefani, doubtfully, adopts that view. M. 

 Coquand, however, in paper No. 1, observes that the genera repre- 

 sented are Carboniferous as well as Triassic. 



Since M. de Stefani himself regards the Triassic age of these beds 

 as merely possible and by no means proven, and since also he admits 

 a considerable portion of the series as undoubtedly Palseozoic, we 

 shall probably not err in continuing to follow M. Coquand, aud in 

 still looking upon the statuary marbles as a whole as of Carboni- 

 ferous- age. Especially as other considerations also point that way. 



LiNTz Green, Newcastle-on-Tyne, Gr. A. Lebour. 



6th July, 1876. 



