1816.] Philosophical Transactions for 1815, Part II. 
the westward of the Scilly Islands. By James Rennell, Esq. F.R.S. 
—In the year 1793 Major Renneil published a paper in the Philo- 
sophical Transactions pointing out the existence of a north-westerly 
current setting in between Ushant and the Scilly Islands. In the 
present paper he states further proofs of the existence of-this cur- 
rent. He supposes it to be caused by the prevalence of westerly 
winds, which occasion an easterly current towards Cape Finisterre 
and Cape Ortegal. ‘This current proceeds along the northern coast 
of Spain, and assumes a northerly direction when it comes to the 
coast of France. In consequence of the north-westerly direction 
of the west coast of France, the current assumes the same direc- 
tion, and accordingly proceeds from the Saintes and Ushant to the 
Scilly Islands. The new proofs contained in this paper are the fol- 
lowing: 1. The Earl Cornwallis Indiaman, in 1791, being 53 
leagues west of Cape Finisterre, experienced an easterly current 
amounting to 26 miles in 24 hours. 2. A bottle thrown out of a 
Danish ship:situated a little to the north of the Earl Cornwallis was 
drifted ashore at Cape Ortegal. 3. Admiral Knight, off Cape 
Ortegal, found the current E.S.E., or nearly along shore, and at 
the rate of one mile per hour. 4. Admiral Payne being off the 
Saintes in a severe S.W. gale, was drifted 70 miles north-west. 
5. Off Scilly the flood tide runs nine hours northward, but the ebb 
in the opposite direction only three hours. 6. Joshua Kelly, in his 
treatise on Navigation, published in 1733, states that an expe- 
rienced Captain of a West Indiaman being in latitude 48° 30’, and 
approaching the British Channel, was becalmed for 48 hours, during 
which he was driven to the northward 46 miles. 7. On the west 
coast of France the mud is all collected on the north side of the 
Garonne, &c. and none of it is to be found on the soush side. 
Major Rennel conceives that a current runs also north along the 
west coast of Ireland, and after passing the north coast of that 
island assumes a southerly direction, and proceeds at least further 
south than Dublin. There is likewise a northerly current: along: 
the west coast of Scotland, which proceeds along the north coast, 
and, assuming a southerly direction, proceeds along the east coast 
as far as Harwich, where it mixes with the easterly current that 
flows in the English Channel, and proceeds along the coast of 
Holland and Jutland to the Naze of Norway. 
3. Some Experiments on a solid Compound of Iodine and Oxygen. 
By Sir H. Davy, LL.D. F.R.S.—(See Annals of Philosophy, 
vol. vii. p. 30.) 
4. On the Action of Acids on the Salts usually called Hyper-ory- 
muriates, and on the Gases produced from them. By Sir H. Davy, 
LL.D. F.R.S.—(See Annals of Philosophy, vol. vii. p. 28.) 
5. Further analytical Experiments relative to the Constitution of 
the Prussic, of the Ferrureted Chyaxic, and of the Sulphureted 
Chyaxic Acids, and to that of their Salts, together with the Appli- 
cation of the Atomic Theory to the analyses of those Bodies. By 
Robert Porrett, jun, Esq.—Mr. Porrett’s analysis of prussic acid 
