CONTENTS 
OF VOL. 146. 
I. On the Constitution and Properties of Ozone, By-Tnouxs Andrews, M.D., F.R.S., 
M.R.I.A., Professor of Chemistry in Queens College, Belfast . . . page 1 
II. On the Formation and some of the Properties of Cymidine, the Organic Base of 
the Cymole Series. By the Rev. John Barlow, Chaplain-in- Or dinary to Her 
Majesty's Household at Kensington Palace, M.A., F.R.S., Kice- President and 
Secretary of the Royal Institution of Great Britain, 8fc. ...... 15 
III. Some Observations on the Ova of the Salmon, in relation to the distribution of 
Species ; in a letter addressed to Charles Darwin, Esq., M.A., V.P.R.S. 8^c. 
By John Davy, M.D., F.R.S., Inspector- General of Army Hospitals . . 21 
IV. On the Effect of Local Attraction upon the Plumb-line at Stations on the English 
Arc of the Meridian, between Dunnose and Burleigh Moor ; and a Method of 
computing its Amount. By the Venerable John Henry Pratt, M.A., Arch- 
deacon of Calcutta. Communicated by the Rev, J. Challis, M.A., F.R.S. 8^c. 3 1 
V. Discussion of the Observed Deviations of the Compass in several Ships, Wood-built 
and Iron-built : with a General Table for facilitating the examination of Com- 
pass-Deviations. By G. B. Airy, Esq., F.R.S. , Astronomer Royal . . 53 
VI. A Second Memoir upon Quantics. By Arthur Cayley, Esq., F.R.S. . . 101 
VII. Researches on the Partition of Numbers. By Arthur Cayley, Esq., F.R.S. 127 
VIII. Examination of select Vegetable Products from India. By John Stenhouse, 
LL.D.,F.R.S 141 
IX. Experimental Researches in Electricity. — Thirtieth Series. By Michael 
Faraday, Esq., D.C.L., F.R.S., Fullerian Prof. Chem. Royal Institution, 
Foreign Associate of the Acad. Sciences, Paris, Ord. Boruss. Pour le Mdrite, 
Eq., Memb. Royal and Imp. Acadd. of Sciences, Petersburgh, Florence, Copen- 
hagen, Berlin, Gottingen, Modena, Stockholm, Munich, Bruxelles, Vienna, Bo- 
logna, Commander of the Legion of Honour, 8fc. 8fc. 159 
X. Researches on the Foraminifera. — Part I. By William B. Carpenter, M.D., 
F.R.S., F.G.S. S^c 181 
