284 REPORT—1885. 
The Antimony Spectrum. 
Wave-lengths 
Scale numbers 
1 per cent. 0-1 per cent. 0-01 per cent. 
Hundredths of an inch 
67°63 3739°0 
80°74 3597°8 
90°21 35046 
109°36 3336°4 
118°21 3266°6 
120°8 3246°6 
122°87 3231°6 
152°91 3029-0 
179°29 2877-1 287771 2877'1 
197-05 2789°6 2789°6 
241°65 2597°2 2597°2 2597°2 
260°33 2527°6 2527°6 
330°37 2311°8 
The Bismuth Spectrum. 
Wave-lengths 
Scale numbers 
1 per cent. 0-1 per cent. 0:01 per cent. 
Hundredths of an inch 
: 3792°7 
71°63 3695°3 
80:99 3595°7 
89°69 35105 
98:4 3430°9 
102°25 3396°7 
146°85 3067°1 3067'1 3067°1 
153°75 3023°8 3023°8 
158-98 2992'2 29921 
159°67 2988-1 
168-52 2937-5 
175°85 2897°2 2897°2 
183-91 2854°8 28548 
185-49 2846°1 2846°1 
294°66 2414-8 
Report of the Committee, consisting of Professor TILDEN, Professor 
W. Ramsay, and Dr. W. W. J. Nicou (Secretary), appointed for 
the purpose of investigating the subject of Vapour Pressures and 
Refractive Indices of Salt Solutions. 
I. Molecular Volumes of Salt Solutions. Part II.' 
THE molecular volumes have been determined of fifty-six solutions, 
comprising forty-seven salts of potassium, sodium, lithium, strontium, 
cadmium, cobalt, and nickel, with chlorine, bromine, chloric, carbonic, — 
sulphuric, nitric, orthophosphoric, metaphosphoric, acetic, oxalic, tartaric, — 
1 Published in Phil. Mag., 1884. 
