LAV— LEA 



301 



Lavis (H. J. Johnston). Notes on the Geology of Lewisham. (Tract.) 



8vo. London, 1876. 



. On the Triassic Strata which are exposed in the Cliff sections 



near Sidmouth, and a note on the occurrence of an ossiferous zone 

 containing bones of a Labyrinthodon. (Tract.) Svo. London, 1876. 

 See also Seelet (H. G-.). 



Lavizzari (Louis). Nouveaux phenomenes des corps cristallises. (Tract.) 



Eol. Lugano, 1865. 



Lavoisier (A. L.). See Guyton de Moryeau (L. B.). 



Lawley (Eobert). Pesci ed altri vertebrati fossili del pliocene toscano. 

 (Tract.) 8vo. Pisa, 1875. 



Lawrence (William). Introduction to Comparative Anatomy and Phy- 

 siology. (Tract.) Svo. London, 1823. 



Lawson (George). Papers read to the Botanical Society of Edinburgh. 

 (Tracts.) 8vo. Edinburgh, 1858. 



Lazari (Vincenzo). See Polo (Marco). 



Lea (Henry C). Description of some new Eossil Shells from the Ter- 

 tiary of Petersburg, Va. (Tract.) 4to. Philadelphia, 1843. 



Abstract. (Tract.) 8vo. Philadelphia, 1843. 



. Descriptions of some new species of Marine Shells, inhabiting the 



coast of the United States. (Tract.) 8vo. Philadelphia, 1845. 



. Catalogue of the Tertiary Testacea of the United States. (Tract.) 



Svo. Philadelphia, 1848. 



. See Lea (Isaac). 



Lea (Isaac). Observations on the genus Unio. Yols. I.-XIII. and 

 Index. 4to. Philadelphia, 1832-74. 



. Contributions to Geology. (Tract.) Svo. Philadelphia, 1833. 



. Characters of three new species of Indian Freshwater Bivalves, 



with notes by W. H. Benson. (Tract.) Svo. Calcutta, 1835. 



. A Sjrnopsis of the family of Naiades. (Tract.) 



Svo. Philadelphia and London, 1836. 



. A Synopsis of the family of Naiades. 3rd edition. 



4to. Philadelphia, 1852. 



. Descriptions of new Preshwater and Laud Shells. (Tract.) 



Svo. Philadelphia, 1840. 



. Description of nineteen new species of Colimacea. (Tract.) 



4to. Philadelphia, 1840. 



. Notice of the Oolite Pormation in America, with descriptions of 



some of its Organic Bemains. (Tract.) 4to. Philadelphia, 1840. 



. On the genus Acostcea of D'Orbigny, a Preshwater Lamelli- 



branchia. (Tract.) 4to. Philadelphia, 1851. 



. On a fossil Saurian of the New Bed Sandstone formation of Penn- 

 sylvania, with some account of that formation. Also on some new 

 Possil Molluscs, in the Carboniferous Slates of the Anthracite seams 

 of the Wilkesbarre Coal formation. (Tract.) 2 copies. 



4to. Philadelphia, 1852. 



. On the Possil Poot-marks in the Bed Sandstone of Pottsville, 



Pennsylvania. (Tract.) 4to. Philadelphia, 1852. 



. Bectification of Mr. T. A. Conrad's " Synopsis of the Pamily of 



Naiades of North America." (Tract.) 2 copies. 



Svo. Philadelphia, 1854. 



