270 PROCEEDINGS OF THE SOCIETY. 



and Son ; Lantern Slides of Apparatus used by different investigators 

 in preparing specimens, and of different forms of Microscopes used by 

 Metallographers ; a number of actual specimens shown on the screen by 

 means of the Epidiascope. 



MEETING 



Held on the 15th of March, 1905, at 20 Hanover Square, W., 

 A. D. Michael, Esq., E.L.S., etc., Vice-President, in the Chair. 



The Minutes of the Meeting of the 15th of February, 1904, were 

 read and confirmed, and were signed by the Chairman. 



The List of Donations to the Library, exclusive of exchanges and 

 reprints, received since the last Meeting, was read, and the thanks of 

 the Society voted to the donors. 



From 

 Dr. J. Bapt. De Toni. Sylloge Algarum. Vol. IV. FlorideiB.l „» « ,, 



Section IV. FamiliaTl.-VII. (8vo. Patavii, Jan. 9, 1905.)/ *neA.umor. 



W. A. Herdman, D.Sc, F.R.S.. P.L.S. Report to the Govern- \ 



rnent of Ceylon on the Pearl Oyster Fisheries of the Gulf of 



Manaar. With Supplementary Reports upon the Marine ^ ^, r> i c nr j P i„ 



Biology of Ceylon, by other Naturalists. Published at the ( ** *" "' 



request of the Colonial Government, by the Royal Society. I 



(London, 4to, 1904) J 



Memorandum on the Construction and Verification of a \T1ie Superintendent of 



New Copy of the Imperial Standard Yard. Part 1. . . J Weights and Measures. 



Monthly Microscopical Journal, 1859-1877, Vols. 1-18 

 Journal of the Royal Microscopical Society, 1878-1882, [ Mr. R. L. Howard. 



5 vols, in 9 vols 



Mr. J. E. Stead, F.R.S., then delivered the second part of his lecture 

 on Micro-Metallurgy. Referring to the lecture delivered at the previous 

 Meeting, he reminded the Fellows present that he had on that occasion 

 described the methods by which metals were prepared and polished for 

 microscopical examination, and had exhibited a number of specimens 

 upon the screen, but he had then, for want of time, been unable to show 

 a large number of lantern slides which had been sent to him by nearly 

 all of the most eminent metallographers for the purpose of his lecture, 

 many of which would be exhibited for the first time this evening. 

 Those to whom he felt specially indebted were : — Dr. Sorby, M. Osmond, 

 Professor Arnold, Professor H. le Chatelier, Dr. T. K. Rose, Professor 

 J. A. Ewing, Mr. Rosenhain, Mr. G. T. Beilby, Messrs. Heycock and 

 Neville, Mr. W. H. Merrett, Mr. F. W. Harbord, and Professor Heyn, 

 of Charlottenburg. 



Micrograms reproduced from the illustrations in Dr. Sorby's original 

 papers clearly showed that, as far as his work went, it was of a good and 

 accurate character, and that subsequent observations by more modern 

 workers had confirmed all he had done. 



In referring to the work of Osmond upon steel, it was shown by his 

 illustrations, and also by the work of the lecturer and other observers, 

 that whilst the hardenite in steels quenched from a point a little above 

 the recalescence point Aiv 2 - 3 , although crystalline, was practically amor- 



