At the time of these observations the liquid air used had probably become almost entirely liquid oxygen by tbe evaporation of the nitrogen. The figure, however, serves to check approximately that of the liquid oxygen.
In conclusion, we desire to express our thanks to Mr. J. E. Petavel for the assistance he has given to us in the above work. We hope shortly to be able to make a further contribution to this portion of the investigations on which we are engaged, on the electrical and magnetic constants of liquid oxygen, and which will include a determination of the dielectric constant of liquid oxygen, made with the object of determining the extent to which this substance obeys Maxwell’s law connecting magnetic permeability, dielectric constant, and optical refractivity.
November 30, 1896.
ANNIVERSARY MEETING. '
Sir JOSEPH LISTER, Bart., F.R.C.S., D.C.L., President, in the Chair.
The Report of the Auditors of the Treasurer’s Accounts, on the part of the Society, was presented as follows :—
“ The total receipts on the General Account during the past year, including balances carried from the preceding year, amount to £8,928 I s . 3d., and the total receipts on account of Trust Funds, including balances from the preceding year, amount to £5,009 Os. 2 The total expenditure for the same period amounts to £7,287 12s. 3d. on the General Account (including £300 on loan to the Coral Boring Committee), and £3,347 11s. 7c?. on account of Trust Funds, leaving a balance on the General Account of £1,605 9s. 4c?. at the bankers (which includes £1304 17s. 3c?. on deposit—Dr. Ludwig Mond’s gift, £54 10s. Publication Grant Account, and £29 11s. 10c?. Water Research Account), and in the hands of the Treasurer a balance of £34 19s. 8c?.; leaving also at the bankers a balance on account of Trust Funds of £1,661 8s. 7c?.”
The thanks of the Society were voted to the Treasurer and Auditors.
