394 Rev. Professor T. G. Bonney, D.Sc, F.R.S. 



possesses considerable artistic power, and at one time sketched 

 a good deal, but of late years he has ceased to do so, except for 

 geological purposes. 



When we contemplate the monumental results of Prof. Bonney's 

 prodigious activity we shall surely conjecture that here was a man 

 especially blessed with bodily robustness, and with leisure, the fruit 

 of private means ; yet he has always suffered from imperfect health, 

 to which sedentary work was obnoxious, and has all his life been 

 compelled by circumstances to labour for an income. What, then, 

 is the secret of his success ? Possibly, mainly method, the habit of 

 doing a thing at once, and doing it only once ; the time which most 

 people lose in hesitation, procrastination, and repetition has thus 

 been secured for useful work : but such method is the privilege of 

 those only who are possessed of an indomitable will and of a mind 

 logical to an unusual degree. 



In spite of years Professor Bonney is still young : he has 

 accomplished much ; much more remains for him to do. With 

 unabated ardour he still presses forwards in the pursuit of truth. 

 That he may attain it, and in no small degree, is the earnest wish 

 of his sincere friends and admirers. We bid him God speed ! 



LIST OF SCIENTIFIC PAPERS BY PEOFESSOE T. G. BONNEY. 



" On some Flint Implements from Amiens " : Eep. Brit. Assoc, 1862, pt. ii, p. 70. 

 " On the Historical Evidence of Volcanic Eruptions in Central France in the Fifth 



Century" : Geol. Mag., 1865, Dec. I, Vol. II, pp. 241-244. 

 " On Traces of Glaciers in the English Lakes " : Geol. Mag., 1866, Dec. I, 



Vol. Ill, pp. 291-293. 

 "Note on a case of Prismatic Structure in Ice": Proc. Cambridge Phil. Soc, 



1866-67, vol. i, pp. 57-59. 

 "Kitchen -Middens on the Great Ormeshead " : Geol. Mag., 1867, Dec. I, 



Vol. IV, pp. 343-344. 

 "On Traces of Glacial Action near Llandudno": Geol. Mag., 1867, Dec. I, 



Vol. IV, pp. 289-293. 

 " On the supposed occurrence of Pholas Burrows in the upper parts of the Great 



and Little Ormesheads" : Geol. Mag., 1869, Dec. I, Vol. VI, pp. 483-489. 

 "On supposed Pholas-Burrows in Derbyshire": Geol. Mag., 1870, Dec. I, 



Vol. VII, pp. 267-270. 

 "Notes on the Geology of the Lofoten Islands " : Quart. Journ. Geol. Soc, 1870, 



vol. xxvi, p. 623 ; Phil. Mag., 1871, vol. xli, p. 76. 

 " Prismatic Structure in Ice " : Mature, 1870, vol. i, p. 481 ; 1871, vol. iii, p. 288. 

 " On a Cirque in the Syenite Hills of Skye " : Geol. Mag., 1871, Dec. I, Vol. VIII,. 



pp. 535-540. 

 " On the Formation of ' Cirques,' and their bearing upon theories attributing the 



Excavation of Alpine Valleys mainly to the action of Glaciers ' ' : Quart. Journ. 



Geol. Soc, 1871, vol. xxvii, pp. 312-324; Phil. Mag., 1871, vol. xlii, 



pp. 317-318. 

 " Ice Scratches in Derbyshire " : Geol. Mag., 1872, Dec. I, Vol. IX, pp. 269-270. 

 " On certain Lithodomous Perforations in Derbyshire": Geol. Mag., 1872, 



Dec I, Vol. IX, pp. 315-318. 

 "Notes on the Roslyn Hill Clay Pit": Geol. Mag., 1872, Dec. I, Vol. IX, 



pp. 403-408. 

 "Lakes of the North-Eastern Alps, and their bearing on the Glacier-Erosion 



Theory" : Quart. Journ. Geol. Soc, 1873, vol. xxix, pp. 382-395. 

 " On the occurrence of a Quartzite Boulder in a Coal Seam in South Staffordshire " : 



Geol. Mag., 1873, Dec. I, Vol. X, pp. 289-291. 

 "On the Upper Greensand or Chloritic Marl of Cambridgeshire" [1872]: Proc. 



Geol. Assoc, 1874, vol, iii, pp. 1-20. 



