I. GEOLOGY. 711 



76. Plagioclase dolerite from Saltodel Castellano (Grau Canaria) No. 45 of 



the collection of Grau Canaria rocks, by M. S. Calderon, formed of 

 plagioclase, augite, and magnetite. 



77. Basalt from Las Palmas, Grau Canaria, No. 40 of collection of Grau 



Canaria rocks of M. S. Calderon, formed of augite, magnetite, olivine, 

 plagioclase. 



78. Basalt from Las Palmas, Grau Canaria, No. 39 collection Grau Canaria 



rocks of M. S. Calderon, formed of augite, magnetite, olivine, plagio- 

 clase. 



79. Plagioclasbasalt from La Cumbre (Grau Canaria), vide No. 53 of col- 



lection of Grau Canaria rocks of M. S. Calderon, formed of plagio- 

 clase, augite, magnetite, hematite. 



80. Nephelinebasalt, from La Cumbre (Grau Canaria), No. 36 of the col- 



lection of Grau Canaria of M. S. Calderon), formed of nepheline, 

 augite, magnetite, plagioclase, hematite. 



81. Rosed felsyte from the Escorial, formed of felsyte and hornblende. 



82. Serpentine from Burgos, formed of serpentine, diallage, magnetite. 



83. Phonolyte from Agacte, Grau Canaria (No. 23 of collection of Grau 



Canaria rocks of M. S. Calderon), formed of sanidin, nepheline, 

 hornblende, sphene. 



84. Leptynyte from Sierra de Guadarrama, formed of orthoclase, quartz, 



muscovite, apatite. 



85. Diorite from Peguerinos (Avila), formed of plagioclase, hornblende, 



magnetite, augite. 



86. Diorite from Buitrago (Madrid), formed of plagioclase, hornblende, 



magnetite. 



87. Ophite from Pando (Santander), formed of plagioclase, augite, diallage, 



hornblende, viridite epidote, magnetite.* 



88. Ophite from Pando (Santander), treated by acids, formed of plagio- 



clase, augite, diallage, epidote. 



89. Altered ophite from Pando (Santander), formed of plagioclase, augite, 



diallage, magnetite, and viritite. 



90. Garnet fils of Riaza (Segovia), formed of garnet, hornblende, plagio- 



clase.f 



3288. Geological Sections of five proposed lines of railway 

 through the counties of Surrey and Sussex, from Brighton to 

 London, made and surveyed in 1837, by Joseph Gibbs, C.E., and 

 Arthur Dean, C.E. Free Library and Museum, Brighton. 



South-Eastern, Brighton line, from Carlton Hill, Brighton, to junction with 

 the Greenwich Kailway. Direct line, from Church Street, Brighton, to junc- 

 tion with the Greenwich Railway. Gibbs' line, from Western Road, Brighton, 

 to junction with the Croydon Railway. Stephenson's line, from North Lane, 

 Brighton, to Nine Elms. Line without a tunnel, from Brighton to Kennington 

 Oval. 



3289. Sections showing the positions of the Palaeozoic 



Bocks beneath the Tertiary or Secondary Strata, with some 

 specimens of the former. Professor Prestwich, Oxford. 



1. Section of the Kentish Town Well. 



2. Specimens of some of the strata passed through in the above well. 



3. Section of the Artesian Well boring at Ostend. 



* Opita de Pando (Santandar), por F. Quirago au de la Soc. Esp. de Hist. Nat. J. V. 

 t Vide Elemente de Pelographic von Du. A. von Lasaulx. Bonn, 1875. 



