450 PROCEEDINGS OF THE ACADEMY OF [1885. 



Lehman, J. TJntersuchungen iiber die Entstehung der altkrystallinischen 



Schiefergesteine. The Author. 



Leighton, Rev. Win. A. The Lichen-Flora of Great Britain, Ireland and 



the Channel Islands. 3d Ed. Shrewsbury, 1879. W.P.Collins. 

 Leitgeb, Hubert. Reizbarkeit und Empfindung im Pflanzenreiche. Graz, 



1884. I. V. Williamson Fund. 



Lereboullet, A. Notice sur le Musee d'llistoire natuielle de Strasbourg 



1838 et 1851. Natural History Soc. of Strasburg. 



Leuckart, Friedrich Sigismund. Zoologische Bruchstiicke. H. 1, 2, 3. 



HelmstJidt, 1820 and Stuttgart, 1841. I. V. Williamson Fund. 



Lewis, H. C. Marginal Karnes. 



Great Trap Dyke across Southeastern Pennsylvania. 



Field Lectures in Geology. Newspaper slips from Public Ledger, 



April— June, 1884. 

 Notes on the Progress of Mineralogy in 1884. The Author. 



Leydijr. Zelle und Gewebe. Bonn, 1885. I. V. Williamson Fund. 



Lighthouse Board. Annual report to the Secretary of the Treasury, for 



the fiscal year ended June 30, 1884. The Board. 



Lindley, J. Digitalium Monographia sistens Historiam Botanicam Generis 



tabulis omnium specierum. Londini, 1821. In Exchange. 



Lindsley, D. P. The Manual of Takigrafy. Plainfield, N. J., 4th Edit., 



1885. 

 The young writer's primer. The Author. 



Linnsea, Naturhistorisches Institut, Frankfurt a. M. Land-Conchylien 



aus dem palaearctischen Faunengebiet. No. 59. 1885. The Director. 

 List of the Fossils of the Upper Silurian formation of Gotland. 

 Locard, A. Contributions a la Faune Malacologique Franchise. Vni et 



IX. Lyon, 1884. The Author. 



Lorenz, L. Bestemmelse af Kviksolvsojlers clektriske Ledningsmodstande 



i absolut elektromagnetisk Maal. The Author. 



Louisiana. Preliminary report of a geological reconnoissance of, 1869. By 



Prof. Eugene W. Hilgard. 

 Supplementary and final report of a geological reconnoissance of the 



State of Louisiana, May and June, 1869. By Eugene W. Hilgard. 

 Summary of results of a late geological reconnoissance of Louisiana. 



By Eugene W. Hilgard. The Author. 



Lyman, Benj. Smith. A review of the Atlas of the Western Middle 



Anthracite Field, Second Geological Survey of Pennsylvania, Anthra- 

 cite District. The Author. 

 McAdie, A. The Aurora in its relations to Meteorology. Washington 



City, 1885. War Dept. 



McCook, Henry C. Tenants of an old farm. New York, 1885. 



Note on the intelligence of a cricket parasitised by a Gordius. A new 



parasitic insect upon spider eggs. 

 Hibernation and winter habits of spiders. The Author. 



Macgillivray, P. H. Note on the reproduction of the Ornithorhyiuhus. 



1884. 

 Description of new or little-known Polyzoa. Part VIII. 1884. 



Royal Society of Victoria. 

 Macoun, J. Catalogue of Canadian plants. Part II, Gamopetale. Mon- 



treal, 1884. The Geological Survey. 



Marshal, Wm. Die Entwickelungsgeschichte der Siisswasser-Polypen. 



1885. I. V. Williamson Fund. 



Martini und Chemnitz. Systematisches Conchylien-Cabinet. :W2e-334e 



Lief. Number^, 1884. \\ ilson Fund. 



Marsh, O. C. U. S. Geological Surv., Vol. X. Dinocerata, a Monograph 



of an extinct order of gigantic Mammals. The Author. 



Lithographic plate of Tinoceras ingens Marsh. Prof. 0. C. Marsh. 



