Publications of Scientific Societies. 61 



CALIFORNIA ACADEMY OF SCIENCES. 



Published at San Francisco, Cal. 



Memoirs : Vol. 1, 1868— Vol. 2, 1895. 

 Bulletins : Vol. 1, 1884— Vol. 2, 1886-87. 

 Occasional Papers: Nos. 1-4, 1890-95. 

 Proceedings, 1st series : Vol. 1, 1854— Vol. 7, 1876. 

 Proceedings, 2d series : Vol. 1, 1888— Vol. 6, 1896. 



The natural system of volcanic rocks ; by F. Baron Richt- 

 hofen. Memoirs Cal. Acad. Sci., Vol. 1, Part 2. San 

 Francisco, 1868. 95 pp. 



The following is the classification of volcanic rocks: 

 Order First : Rhyolite— 



Family 1. Nevadije, or granitic rhyolite. 



2. Liparite, or porphyritic rhyolite. 



3. Rhyolite proper, or lithoidic and hyaline rhyolite. 

 Order Second : Trachyte — 



Family 1. Sanidin trachyte. 



2. Oligoclase trachyte. 

 Order Third: Propylite— 



Family 1. Quartzose propylite. 



2. Hornblendic propylite. 



3. Augitic propylite. 

 Order Fourth : Andesite— 



Family 1. Hornblendic andesite. 

 2. Augitic andesite. 

 Order Fifth: Basalt- 

 Family 1. Dolerite. 



2. Basalt 



3. Leucitophyre. 



On certain fossils from San Luis Obispo County; by Dr. Anti- 

 sell. Proc. Cal. Acad. Sci., Vol. 1, 1854-57, pp. 34-35. 



Description of Ammonites Batesi; by Dr. J. B. Trask. Proc. 

 Cal. Acad. Sci., Vol. 1, 1854-57, p. 39. 



Descriptions of fossil shells; by Dr. J. B. Trask. Proc. Cal. 

 Acad. Sci., Vol. 1, 1854-57, pp. 40-42. 



Chemnitzia papulosa, n.sp. ; Tornatella eUiptica, n.sp. ; Murex fragUiSf 

 n.sp. ; Fustu BarbarenHs, n.8p. ; F. robustus, n.sp. ; F. rugosus, n.sp. 



On the cause of tides, earthquakes, rising of continents, etc.; by 

 Dr. C. F. Winslow. Proc. Cal. Acad. Sci., Vol. 1, 1854-57, 

 pp. 48-51. 



