366 Presents. 



Ball (SirR. S.), F.R.S. The Theory of Permanent Screws; Ninth 

 Memoir. 4to. Dublin 1891. The Author. 



Bernier (F.) Travels in the Mogul Empire (Constable's Oriental 

 Miscellany. Vol. I). 8vo. London 1891. Mr. A. Constable. 



Bigourdan (G.) Histoire de 1'Astronomie a Toulouse. 4to. Paris 

 1883. (With three other Excerpts in 4to.) The Author. 



Blanford (W. T.), F.R.S. The Fauna of British India, including 

 Ceylon and Burma. Part 2. 8vo. London 1891. 



The Author. 



Breuer (A.) tlbersichtliche Darstellung der Mathematischen 

 Theorien iiber die Dispersion des Lichtes. 8vo. Erfurt 1891. 



The Author. 



Burnett (S. M.) Refraction in the Principal Meridians of a Triaxial 

 Ellipsoid. 8vo. New York 1883. The Author. 



Carpenter (A.) Sewage Farming. 8vo. London 1891. 



The Author. 



Daubree (M.), For. Mem. R.S. Recherches Experimentales sur le 

 Role possible des Gaz a hautes temperatures .... dans divers 

 Phenomenes Geologiques. 8vo. Paris 1891. The Author. 



Hann (J.) Studien iiber die Luftdruck und Temperatur auf dem 

 Sonnblickgipfel. 8vo. Wien 1891. The Author. 



Harkness (W.) On the Color Correction of Achromatic Telescopes. 

 8vo. \_New York] 1880 ; On the Progress of Science as exem- 

 plified in the Art of Weighing and Measuring. 8vo. Washington 

 1888. The Author. 



Hirn (G. A.), Manifestation en 1'Honneur de. 8vo. Strasbourg [1891]. 



M. Grosseteste, Mulhouse. 



Kaiser (0.) Die Funktionen der Ganglienzellen des Halsmarkes : 

 Preisschrift. 8vo. Haag 1891. The Author. 



Maidment (C.) The Geology of Witwatersrand, to accompany his 

 first published Map of the Gold Fields. 8vo. Cape Town 1890. 

 (With Map, separate.) The Author. 



Risley (H. H.) The Tribes and Castes of Bengal. Authropometric 

 Data. Vols. I-II. 8vo. Calcutta 1891. The Author. 



Tuberculosis. Reprints of Three Editorials regarding the Priority in 



demonstrating the Toxic Effect of Matter accompanying the 



Tubercle Bacillus and its Nidus. 8vo. [Philadelphia 1890-91.] 



Bacteriological Laboratory, Academy of Natural Sciences, 



Philadelphia. 



Wardle (T.) On the History and Growing Utilisations of Tussur 

 Silk. 8vo. London 1891. The Author. 



Wood-Mason (J.) Natural History Notes from H.M. Indian Marine 

 Survey Steamer "Investigator." Series II. No. 1. On the 

 Results of Deep-Sea Dredging during the Season 1890-91. 8vo. 

 [London.] The Author. 



