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Iconographie der schalentragenden europaischen Meeresconchylien, H. 4-7. 

 Cassel, 1883. I. V. Williamson Fund. 



Die geographische Verbieitung der Heliceengruppe Macularia. 8vo T. 



The Author. 

 Koch, Ludwig. Die Entvvicklungsgeschichte der Orobranclien. Svo. Heidel- 

 berg, 1887. I. V. Williamson Fund. 

 Kokscharovv, N. v. Materialen zur Mineralogie Russlands. IX, 18, 23. 



I. V. Williamson Fund. 



Kunze, Gustav. Die Farrnkrauter in kolorirten AbbiLlungen nalurgetreu 



erljiutert und beschrieben. 2 vols, in one, 4to. Leipzig, 1840-47. 



Analecta Pteridographica. Fol. Lipsire 1837. John H. Redfield. 



Kunze, Gustav and Johann Carl Schmidt. Mykologiscbe Heft, 2es. Heft. Svo. 



Leipzig, 1823. Executors of Dr. Geo. Martin. 



Lacordaire, M. Th. Histoire naturelle das insectes. Genera des coleopt^res. 



T. 8me. Trictenotomides et Longicornes. 8vo. Paris, 1869. 



American Entomological Society. 



Laszlo Eduard D. Chernische und mechanische Analyse ungarlandischer Thone 



mit Riicksicht auf ihre industrielle Verwendbarkeit. 8vo T. Buda[)est, 



1886. Royal Hungarian Society of Natural Science. 



Lawes, Sir John Bennett. Memoranda of the origin etc. of experiments at 



Rothamsted. June, 1887. Fol T. The Author. 



Lawrence, Geo. N. The rediscovery of Bachman's warbler, Helminthophila 



Bachmani Aud. in the United States. Jan. 1887. Svo T. 



Descriptions of new species of birds of the families Sylviidoe, Troglodytidse 



und Tyrannidje. Miy 9, 1887. SvoT. 



Description of a new species of thrush from the Island of Grenada, West 



Indies. Feb. 28, 1887. Svo T. The Author. 



Lea, M. Carey. Papers on the photochemistryof the silver haloids. June and 



July 18S7. Svo T. The Author. 



Lee, Arthur Bolles. The microtomist's vade-mecum. Svo. l^ondon, 1885. 



I. V. Williamson Fund. 



Lesley, J. P. Second Geological Survey of Pennsylvania. Letter to the Governor, 



Dec. 31. 1874. SvoT. In exchange. 



Lepsius, R. Handb. z. deutschen Landes und Vols. Geologic von Deutschland 



und den angrenzenden Gebieten. 1, 1. I. V. Williamson Fund. 



Letourneux, A. and J. B. Bourguignat. Expl. Sclent, de la Tunisie. Prodrome 



de la malacologie terrestre et fluviatile de la Tunisie. Paris, 1887. Svo 



T. The Authors. 



Leuckart, Rudof. Die Parasiten des Menschen und die von ihnen herriihrenden 



Krankhelten. I, 8. 2e. Aufl. Svo. Leipzig u. Heidelberg, 1886. 



i I. V. Williamson Fund. 



Lewis, H. Carvill. The matrix of the diamond. Sept. 7, 1887. SvoT. 



On some important extra-marine lakes in Central England, North America 



and elsewhere. Sept. 2, 1887. Svo T. 

 The terminal moraines of the great glaciers of England. Sept. 2, 1887. 



Svo T. 

 On a diamantiferous peridotite, and the genesis of the diamond. Compara- 

 tive studies upon the glaciation of North America, Great Britain and 

 Ireland. Svo T. 1887. 

 The alleged physical phenomena of spiritualism. Svo T. The Author. 



Lewis, T. H. Snake and snake like mounds in Minnesota, 1887. 8vo T. 

 Incised bouklers in the Upper Minnesota Valley. Svo T. 1887. 



The Author. 

 Light House Board, annual report, June 30, 1886. Svo. Washington, 1886. 



Treasury Deimrtment. 

 Linden, J. Lindenia. Iconographie des orchidees. I, II. Gand, 1885-87. 



Thomas Meehan. 



Lockwood, Samuel. Raising diatoms in the laboratory. Svo T. New York, 



1886. The Author. 



