The Spectrum of Helium1
NATURE [ AUGUST 29, 1895 Mr. Saniter's paper, describing a new method for the analysis of chrome and ferro-chromium, was the last read at this sitting. This is a further extension of Mr. Stead's modification of Dr. Clarke's process, and has the great advantage of reducing the time occupied in the analysis. On the afternoon of this day there were several excursions, the chief of which was to 'Worcester, where the works of the Royal Porcelain Company were inspected. Another party visited the
... ty visited the Round Oak Iron and Steel \Vorks, while others proceeded to the glass works, fireclay works, small arms factories, and to other works in and around Birmingham. In the evening there was a very successful reception and entertainment in the Edgbaston Botanical Gardens. The final sitting of the meeting was on Thursday of last week, when a paper by Mr. Henry Wiggin, on nickel steel, was first taken. In this contribution the advantages of nickel steel as a constructive material were brought forward ; its great tensile strength combined with excessive ductility being dwelt npon. Another advantage possessed is freedom from corrosion, as compared with ordinary steel. Instances were given of the nickel steel containing 3¼ per cent. of nickel, which had a tensile strength fully 30 per cent. higher than ordinary steel, and an elastic limit at least 7 5 per cent. higher. The author does not give any details in regard to cost, which is naturally higher than that of ordinary steel ; but speaking npon the subject generally, he was of opinion that the additional price that would have to be charged would generally be more than compensated for by in-2reased efficiency. In the discussion, Mr. W. Beardmore, of Glasgow, said he had been making large quantities of nickel steel for the last two years. This was for armour-plates, but he was now preparing a series of tests to submit to Lloyd's with a view to introducing the material for marine purposes. Mr. Jeremiah Head, who had lately visited America, said that at the works of Mr. Carnegie he had seen large quantities of nickel steel produced at a cost, he was told, of about £7 a ton ; bnt r89r. © 1895 Nature Publishing Group AUGUST 29, 1895] NATURE Wavelength.