899 
BRITISH ASSOCIATION FOR THE ADVANCEMENT 
OF SCIENCE. 
Life Members (since 1845), and all Annual Members who have not 
intermitted their Subscription, receive gratis all Reports published after 
the date of their Membership. Any other volume they require may be 
obtained on application at the Office of the Association, Burlington 
House, Piccadilly, London, W., at the following prices: Reports for 
1831 to 1874 (of which more than 15 copies remain), at 2s. 6d. per volume ; 
after that date, at two-thirds of the Publication Price. A few sets, from 
1831 to 1874 inclusive, = also be obtained at £10 per set. 
Associates for the Meeting in 1912 may obtain the Volume for the Year at 
two-thirds of the Publication Price. 
REPORT or tHe EIGHTY-FIRST MEETING, at Portsmouth, August 30, 
1911, Published at £1 4s. 
CONTENTS. 
PAGE 
Rules of the Association, Lists of Officers, i yh of the Council, List of 
Committee, Grants of Money, &e. . . oh) 0S Cxdexioxlva 
Address by the President, Prof, Sir William Barge Ky ©. Bi; B. R. s. SLL 3 
Report on the Work of Establishing a Solar Observatory in Australia.  .. 25 
Tenth Report on the Investigation of the Upper Atmosphere . .  . . 27 
Sixteenth Report on Seismological Investigations .. a) 32: Ae 30 
Report on the further Tabulation of Bessel and other Fonbiibna SPRL EA Sane 39. 67 
Report on Magnetic Observations at Falmouth Observatory. . . . .- 78 
Report on Electrical Standards. . . cll at ual la 80 
Report on the Study of Isomorphous Silken: Desivabived of Bane peed 82 
Report on the Influence of Carbon and other Elements on the Corrosion of 
Steel ‘ A ‘ : : : . : . ; : : ‘ é ; 83 
Reporton DynamicIsomerism . . . . Mo 91 
Report on the Transformation of Aromatic Nitroamines ean Allied Sistidharidaes. 94 
Report on Electroanalysis .  . A Wiad alten Fact re 98 
Report on the Study of Hydro-aromatic wivfichantiee : 99 
Report on the Igneous and Associated Rocks of the Glenseul aa ies 
Nafooey Areas, Cos. MayoandGalway . . . . - + + + 210i 
Report on the Erratic Blocks of the British Isles .  . ee a | 
Report on the Fossil Flora and Fauna of the Midland Coalfields . 46 Ay ant aieG 
