274 



THE GEOLOGIST. 



Siliceous — 



Peroxide of iron . . . . 

 Carbonate of lime . . . . 

 Silica, with a little alumina . 



23.5 

 74.0 



2.5 



100. 



Whether any connexion can be traced between these last two and 

 the two former, T leave for others to decide. 



The following list of books may perhaps be useful to those who wish 

 to further investigate the subject : — In 



Professor PliiUips' Geology of Yorkshire, 

 Young and Bird's Survey of the Yorkshire Coast, 

 Dr. Fitton's IMemoir of the Strata below the Chalk, 

 Taylor's Hunstanton CUff (Phil. Mag. vol. Ixi.), 

 Woodward's Geology of Norfolk, 



Rose on the Geology of West Norfolk (Phil. Mag. for the years 1835 and 18.36), 

 will be found some account of the English Red Chalk. And in 



Sedgivick and Murchison on the Structure of the Eastern Alps (Geol. Soc. 

 Trans, vol. iii. Second Series), 



Sir. R. I. jMui'chison on the Geological Structure of the Alps (Quart. Geol. 

 Journal, vol. v.). 



Prof T. A. Catullo on the Epiolitic Rocks of the Venetian Alps (Quart. Geol. 

 Joiunal, vol. vii.). 



Count A. de ZigTio-on the Stratified Formations of the Venetian Alps (Quart. 

 Journal Geol. Soc. vol. vi.), 



will be seen an outline of the Scaglia or Red Chalk of Italy. 



By the kindness of Dr. Bowerbank, Messrs. Wetherell, Bean, 

 Leckenby, and Rose, in permitting me to see the specimens in their 

 respective cabinets, and to whom, as well as to Mr. Rupert Jones, 

 I must express great obligations for much valuable information, 

 the accompanying list of the Red Chalk fossils of Speeton, Hun- 

 stanton, and Muswell Hill has been compiled. To the Council of the 

 Geological Society, 1 have been also indebted for permission to figure 

 from the Society's Museum the Inoceramus Crispii, in the Proceedings 

 of the Geologists' Association. 



