PLATES. 



I. II. Illustrative of Prof. Magnus's Paper on Hydraulic Researches. 



III. Illustrative of Sir W. Snow Harris's Paper on a General Law of Elec- 

 trical Discharge. 



ERRATA IN VOL. X. 



Page 314, line 26,/or displaced read injured. 



— 316, — 13,/or- lOB read 168. 



— 324, — 23, /or sunk from 1 to 3 lines read sunk 1, at the most 



3 lines. 



— ih. — ib. for from 5 to 6 lines read 5, at the most 6 lines. 



— 435, — 2 from bottom, /or (5-62)2 read (5-6)2. 



— ib. — 1 from bottom, /or 900 read 9000. 



ERRATA IN VOL XI. 



Page 4, line 22, for As induction cannot read As conduction cannot. 



— 6, — 9, for conduction read induction. 



