14 



ON THE RED CHALK OF ENGLAND. 



Siliceous — 



Peroxide of iron . . . 

 Carbonate of lime . . . . 

 Silica, with a little alumina . 



2.5 

 23.5 

 74.0 



100. 



"Whether airy connexion can be traced between these last two and 

 the two former, I 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 Phillips' Geology of Yorkshire, 

 Young and Bird's Survey of the Yorkshire Coast, 

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

 Taylor's Hunstanton Cliff (Phil. Mag. vol. lxi.), 

 Woodward's Geology of Norfolk, 



Rose on the Geology of West Norfolk (Phil. Mag. for the years 1835 and 1836), 

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



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

 Trans, vol. iii. Second Series), 



Sir. R I. Murchison 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. 

 Journal, vol. vii.), 



Count A. de Zigno 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. Bowerbauk, 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 am also indebted for permission to figure from 

 the Society's Museum the Inoceramus Crispii, on pi. i. fig. 4. 



