218 PROCEEDINGS. 



apparatus by Prof. Rowland in the " Philosophical Magazine." 

 A very high resistance galvanometer mounted in the way recom- 

 mended by Gray, but found to be rather clumsy and not so good 

 as the ordinary form. A cross bow and other apparatus for 

 drawing out threads of quartz, glass, etc., in the way described 

 recently by Mr. Vernon Boys. An ordinary Wheatstone Bridge 

 Resistance box with some slight modification in the number of 

 coils and mechanical arrangements. 



Prof. Threlfall referred at some length to various theoretical 

 points which had arisen in connection with the construction of 

 these instruments. 



Twenty members were present. 



The following donations were laid upon the table and 

 acknowledged : — " 



Donations Received during the Month of September, 1887. 



(The Names of the Donors are in Italics.) 



TRANSACTIONS, JOURNALS, REPORTS, &c. 



Amsterdam — "Revue Coloniale Internationale," Tome V., 



No. 2, Aout, 1887. The Editors. 



Brisbane — Royal Society of Queensland. Proceedings, Vol. 



III., 1886. The Society. 



Cordoba — Academia Nacional de Ciencias. Boletin, Tome 



IX., Entregas 1 and 2 Junio, 1886. The Academy. 



Dublin — Royal Irish Academy. Proceedings, Polite Liter- 

 ature and Antiquities, Ser. II., Vol. II., No. 7; 

 Proceedings, Science, Ser. II., Vol. IV., No. 5; 

 Transactions, Polite Literature and Antiquities, 

 Vol. XXVII. , Parts 6, 7, 8. Transactions, Science, 

 Vol. XXVIIL, Parts 21 to 25 inch " Cunningham 

 Memoirs," Nos. 2, 3, 4. 



Florence — Societa Africanad' Italia (Sezione Fiorentina). 



Bullettino, Vol. III., Fasc. 5 and 6, 22 Luglio, 1887. The Society. 



Glasgow — University. The Glasgow University Calendar, 



for the year 1887-88. The University. 



Hobart— Royal Society of Tasmania. Register of Papers 

 published in the Tasmanian Journal and the Papers 

 and Proceedings of the Royal Society of Tasmania, 

 from the year 1841 to 1885. Woods and Forests of 

 Tasmania, Annual Report, 1886-7 : including Report 

 upon the Systematic Conservation of the Woods 

 and Forests of Tasmania, by G. S. Perrin, F.L.S. The Society. 



Leeds — Yorkshire College. Thirteenth Annual Report, 



1886-7. The College. 



London — Geological Society. Quarterly Journal, Vol. 



XLIIL, Part 3, No. 171, 1 August, 1887. The Society. 



Linnean Society. Journal (Botany) Vol. XXII. , No. 

 149, Vol. XXIV., No. 158. Journal (Zoology) Vol. 

 XX., No. 117, Vol. XXL, No. 129. 



