576 General Monthly Meeting, [May 9, 



Manchester Geological Society — Transactions, Vol. XVI. Parts 4, 5. 8vo. 1881. 



McCosh, John, M.D. (the Author) — Grand Tours in Many Lands. A Poem. 16to. 

 1881. 



Medical and Chirurgical Society, Royal — Proceedings, Vol. IX. No. 1. 8vo. 1881 . 



Meteorological Society — Quarterly Journal, No. 37 ; and History of the Society, by 

 G. J. Symons. 8vo. 1881. 



Pharmaceutical Society of Great Britain — Journal, April, 1881. Svo. 



Photographic Society — Journal, New Series, Vol. V. No. 7. 8vo. 1881. 



Preussische Akademie der Wissenschaften — Monatsberichte : Dec. 1880. Svo. 



Boml Society of minhurgh— Transactions, Vol. XXIX. Part 2. 4to. 1879-80. 

 Proceedings, Vol. X. No. 105, &c. Svo. 1879-80. 



Eoyal Society of ioidon— Proceedings, No. 211. 8vo. 1881. 



St Petershourg, Academic des Sciences — Bulletins, Tome XXVII. No. 2. 4to. 

 1881. 



St. Petersburg Central Physical Observatory {through Dr. H. Wild, Director) — 

 H. Wild. Die Temperatur-Verhaltnisse des Russischen Reiches. — Sup- 

 plementband zum Repertorium fiir Meteorologie : zweite Halfte nebst Atlas. 

 4to. and fol. 1881. 



Siemens, C. William, Esq. D.C.L. F.R.S. M.E.I, (the Author)— The Dynamo- 

 Electric Current and Certain Means to improve its Steadiness. (Phil. Trans. 

 1880). 4to. 

 Gas and Electricity as Heating Agents. (K 104) Svo. 1881. 



Statistical Society—Jonrnsd, Vol. XLIV. Part 1. Svo. 1881. 



Symons, G. J. — Monthly Meteorological Magazine, April, 1881. Svo. 



Telegraph Engineers, Society of — Journal, Part 35. Svo. 1880. 



University College, London — Calendar for 1881. 12mo. 1881. 



United States Coast Survey— Methods and Results of Meteorological Researches. 

 Part 2. 4to. 1880. 



Victoria Institute— Jonrna]., No, 57. Svo. 1881. 



Zoological Society of I/onc7o?i— Transactions, Vol. XI. Parts 3, 4, 4to. 1881. 

 Proceedings in 1880. Part 4. Svo. 1881. 



WEEKLY EVENING MEETING, 

 Friday, May 13, 1881. 



Frederick Joseph Bramwell, Esq. F.E.S. Vice-President, in the 



Chair. 



Francis Galton, Esq. M.A. F.R.S. MM.L 



Mental Images and Vision. 



[Abstract deferred.] 



