1880.] 



Presents. 



591 



Scacchi (Archangelo) Richerche Chimiclie sulla Incrostazioni Gialle 

 della Lava Vesuviana del 1631. Memoria Prima. 4to. Napoli 

 1879. The Author. 



Schemer (Hermann) Die Naturgesetze und ihr Zusammenhang mit 

 den Prinzipien der abstrakten Wissenchaften. Theil III. Liefer- 

 nngen 6-8. 8vo. Leipzig 1880. The Author. 



Schwendler (Louis) On a New Standard of Light. 8vo. Calcutta 

 1879. The Author. 



Seeley (H. G.), F.R.S. Index to the Fossil Remains of Aves, Ornitho- 

 sauria, and Reptilia from the Secondary System of Strata arranged 

 in the Woodwardian Museum. 8vo. Cambridge 1869. The 

 Oririthosauria : an elementary study of the Bones of Pterodac- 

 tyles. 8vo. Cambridge 1870. Also, thirty-eight pamphlets and 

 excerpts. The Author. 



Sturm (Rudolf) Zur Theorie der Flachen dritter Ordnung. 4to. 

 Berlin. The Author. 



Trois (Enrico F.) Annotazioni sopra un Organo Speciale e non 

 descritto nel Lophius Piscatorius. 8vo. Venezia 1880. 



The Author. 



Wiedersheim (R.) Erwiderung an Herrn Peters. 8vo. Jena 1880. 



The Author. 



