motion in space. — Scinder. Histovìcal sketch óf the' genetic names proposed for Butterflies : a 

 contribution to systematic nomenclature. — Hayes. On the wide diffusion of Vanadium and its 

 association with phosphorus in many rocks. —Pickering and Williams. Foci of lenses placed obli- 

 que ly. _ Amory and Minai. On the effect of heat upon the magnetic susceptibility of soft iron.— 

 Asa Gray. A conspeetus of the North American Hydrophyllaceae. — Watson. Revision of the geuus 

 Ceanothus, and descriptions of new plants, with a synopsis of the werstern species of Silene. — 

 Farlow. Liste of the marine Algae of the U. S. — Trowbridge. On a new induction Coil. — Peirce 

 and Lefavcur. On the effect of armatures on the magnetic state of Electro-Magnets. — Iiodgkins 

 and Jennmgs. On the lime of demagnetization of soft iron. — Jacques. Light transmitted by one 

 or more plates of glass. — Peirce G. S. On the application of logicai analysis to multiple Algebra. — 

 Peirce B. On the uses and transformations of linear Algebra. — Gibbs. Optical notices. — Williams. 

 Intercity of twilight. — Grosby. Light of the sky. — Pickering and Slrange. Light absorbed by the at- 

 mosphere of the Sun. — hi. Id. Tests of a magneto-electric machine. — Jacques. Answer to M. 

 Jamm's objections to Ampère's theory. — Gooke. Melanosiderite. A new minerai species. — -Cooke and 

 Gooch. On two new varieties of vermiculites, with a revision of the other members of this group. 

 tProceedings of the Koyal Geographical Society. Voi. XX. N.II, IV, V. London, 1876. 8.° 

 N. II. Sione. Discovery of the Mai-kassa, or Baxter river, New Guinea. — Maynard. Jour- 

 ney from Antananarivo to Mojunga. — Cameron. Letters detailing the journey of the Livingstone 

 East Coast expedition from Lake Tanganyika to te West Coast of Africa. — Stanley. Letters on 

 his journey to Victoria Nyanza and circumnavigation of the Lake. — N. IV. Elias. Visit to the 

 valley of the Shueli, Western Yunnan. — Markham. Afgtaan Geography. — Macfarlane. Ascent of 

 the Fly river, New Guinea. — Sione. Recent explorations in the interior of New Guinea from Port 

 Morosby. - Anderson. North-American boundary, from the Lake of the Woods to the Eocky Moun- 

 tain. — Cameron. Journey across Africa, from Bagamoyo to Benguela. — Sione. Description of the 

 country and natives of Port Moresby and neighbourhood, New Guinea. — VAlberlis. Remarks on the 

 natives and products of the Fly River, New Guinea. — Colslon. Itinerary from Debbé to el Obeyad, 

 on upper Nile. — N. V. Bawlinson. Address at the anniversary meeting of the R. Geographical 

 Society, 22»* May, 1876. 



fProgramme de la Société Hollandaise des Sciences à Harlem. Année 1876. 8.° 

 iReport (Annual) of the United States Geological and Geographical Snrvey of the 



terrltories, embracing Colorado and parts of adiacent territories. Washington, 



1876. 8.° 



tSchriften der physikalisch-okonomischen Gesellschaft zu Konigsberg. XVI Jahrgaug. 

 1, 2 Abth. Konigsberg, 1876. 4.° 



Luther. Gedàchtnissrede auf Argelander. - Doni. Die Station zur Messung der Erdtemperatu- 

 ren zu Konigsberg. - Zaddach. Beobachtungen uber die Arten der Blatt und Holzwespen. - Jent- 

 zsch Das Schwanken des festen Landes.- Lentz. Vierter Nachtrag zum neuea Verzeichmss der 

 preussischen Kafer. - Berendt. Altpreussische kuchenabfalle am frischen HatF. - Samter. Ueber che 

 Grundanschauungen von Werth in den verschiedenen Werththeorien. 



tSociéfcó Hollandaise des Sciences à Harlem. Notice historique, liste des protecteurs, 

 présidents, secrétaires, directeurs et membres, et Liste des publications de la So- 

 ciété etc. Harlem, 1876. 8.° 



'Statistique internationale des caisses à épargne compilée par le bureau de statistique 

 da Royaume d'Italie, Présentée à la IX me session da Congrès international de 

 statistique a Buda-Pest. Rome, 1876. 4.° 



tSveriges Geologiska Undersòkning. Femtonde Hàftet. Kartbladen Riseberga (N. 54), 

 Latorp (N. 55) och Nora (N. 56). Stockholm, 1876. f. 



tSvenska (k) Vetenskaps-Akademiens Handlingar. Ny fòljd. Elfte Bandet. 1872. Sto- 

 ckholm, 1873-75. 4.° con atlante. 



