336 



Presents. 



[Jan. 26, 



observed with the closest attention, the result will be considerably too 

 high in consequence of the formation of a dew deposit at a tempera- 

 ture above the true dew-point, and it may possibly be erroneous in 

 consequence of variations in temperature of the different parts of the 

 box containing the thermometer. 



An account is given of Alluard's modification of Regnault's hygro- 

 meter, and of Bogen's hygrometer. 



A second note, B, is appended to the report, showing the tables 

 used in various countries for the reduction of wet and dry bulb obser- 

 vations. 



Presents, January 26, 1888. 



Transactions. 



Albany : — Albany Institute. Transactions. Vol. XI. 8vo. Albany 

 1887. The Institute. 



Baltimore : — Johns Hopkins University. Circulars. Vol. VII. 

 Nos. 60-61. 4to. Baltimore 1887 ; Studies in Historical and 

 Political Science. Fifth Series. Nos. 10-11. 8vo. Baltimore 

 1887. The University. 



Basel :— Natnrforschende Gesellschaft. Verhandlungen. TheilVHI. 

 Heft 2. 8vo. Basel 1887. The Society. 



Batavia : — Bataviaasch Genootschap van Kunsten en Weten- 

 schappen. Notulen. Deel XXV. Aflev. 3. 8vo. Batavia 1887 ; 

 Nederlandsch-Indisch Plakaatboek, 1602-1811. Deel IV. 8vo. 

 Batavia 1887. The Society. 



Koninklijke Natuurkundige Vereeniging. Natuurkundig Tijd- 

 schrift. Deel XLVI. 8vo. Batavia 1887. The Association. 



Bergen : — Museum. Aarsberetning, 1886. 8vo. Bergen 1887. 



The Museum. 



Birmingham : — Philosophical Society. Proceedings. Vol. V. Part 2. 



8vo. Birmingham [1887]. The Society. 



Brussels : — Academie Royale de Belgique. Annuaire. 1888. 12mo. 



Bruxelles. The Academy. 



Halle :— Verein fur Erdkunde. Mittheilungen. 1887. 8vo. Halle. 



The Verein. 



Helsingfors : — Finska Vetenskaps-Societet. Bidrag till Kannedom 

 af Finlands Natur och Folk. Haftet 44. 8vo. Helsingfors 

 1887. The Society. 



Innsbruck : — Ferdinandeum fur Tirol und Vorarlberg. Zeitschrift. 

 Folgelll. Heft. 31. 8vo. Innsbruck 1887 . The Ferdinandeum. 

 Naturwissenschaftlich-Medizinischer Verein. Berichte. Jahr- 

 gang XVI. 8vo. Innsbruck 1887. The Verein. 



Jena : — Medicinisch-Naturwissenschaftliche Gesellschaft. Jenaische 

 Zeitschrift fur Naturwissenschaf t. Band XXI. 8vo. Jena 1887. 



The Society. 



