— CXLVIII — 



One to Twenty-one per cent, of Manganese. — 9. Stoney. Studies in Ontology, from the 

 Standpoint of the Scientific Student of Nature. I. - The First Step~ in which an attempt 

 is macie to find out in what way the Scientific Study of Nature is related to the actual 

 Existences and Events of the Universe. — Wigham. An Improved Method of Using Annular 

 Lenses for Lighthouse Illumination. — Joly. On a Method of Determining the Ahsolute 

 Density of a Gas. — Adeney. On an Apparatus Applicable for Gas Analysis and other 

 purposes. — Kirby. On the Employraent of the Names proposed for Genera of Orthoptera 

 previously to 1840. — Grubb. On a Heliostat for the Smithsonian Institution, Washington. 



*Pnblications of the Cincinnati Observatory. 10. Cincinnati, 1890. 

 Wilson. Doublé stars 1882, 6 made with the 11 inch Equatorial. 



*Publications of the Leander Me Cormick Observatory of the University Vir- 

 ginia. Voi. I, 4. Doublé stars, 1885-86. 



"'Report (XI Animai) of the Archaeological Institute of America, 1889-90. 

 Cambridge. 



; ' Report (Animai) of the Board of Regents of the Smithsonian Institution. 



1886, II; 1887, I, II. Washington, 1889. 

 'Report (Annual) of the Secretary to the Board of Regents of the University 



of California. 1888/89. Sacramento, 1889. 

 ■ Report of the U. S. Geographical Surveys west of the one hundredth Meridian. 



Voi. I, Geographical Report. Washington, 1889. 

 'Resumé des séances de la Société des ingénieurs civils. Séance du 3 octo- 



bre 1890. Paris. 

 ■> Revista do Observatorio. Anno V, n. 8. Rio de Janeiro, 1890. 

 1 Revista trimensal do Instituto historico e geographico brazileiro. T. LUI, 1. 



Rio de Janeiro, 1890. 

 ' Revue internationale de l'électricité et de ses applications. T. XI, n. 115, 116. 



Paris, 1890. 



Leonardi. Lavoisier est-il le plagiaire de Cawendisli et de Watt. — Montillot. Les 

 appareils téléphoniques admis en France sur les réseaux urbains. — Féret. La station de 

 Deptford et les càbles Ferranti. — Jacques. Rhéostat du D r Gaertner. — Leonardi. Les 

 accumulateurs de 1888 à 1890. — Drouin. Station centrale de Nancy. — Dumont. Les ap- 

 plications de l'électricité aux chemins de fer. — Michaut. Les piles légères Eenard. — 

 Jacques. Les accumulateurs dans l'industrie galvanoplastiche. 



•Revue politique ed littéraire. T. XLVI, n. 14-17. Paris, 1890. 



<Revue scientifique. T. XLVI, n. 14-17. Paris, 1890. 



f Rundschau (Naturwissenschaftliche). Jhg. V. 41, 42, 44. Brannschweig, 1890. 

 "Studies from the biological laboratory (Johns Hopkins University). IV, 6. 

 Baltimore, 1890. 



Watase. On the Morphology of the Compound Eyes of Arthropods. — Peck. On the 

 Anatomy and Histology of Cymbuliopsis Calceola. — Morgan. On the xlmphibian Blasto- 

 pore. — Wilson. On a New Actinia, Hoplopboria Coralligens. 



Studies (Johns Hopkins University) in historical and politicai science. 8 th Se- 

 ries, HI, IV. Baltimore, 1890. 



I-II. Small. The Beginning of American Nationality. — IV. Blackmar. Spanish 

 Cólonization in the Southwest. 



