370 Reviews — Milne's Seismological Journal. 



positions were first fixed on March 29, 1889, re-determined; 

 November 14, 1890, and again December 3, 1893. The measure-, 

 nients so far showed (what has been found elsewhere) that the sides 

 move more slowly than the centre ; that the ice moves more slowly 

 as it approaches the terminal face ; that the current is varied by 

 surrounding circumstances, such as bends of the glacier and, 

 probably, the unevenness of its bed. 



Its daily rate is not constant; a comparison of the rate for 1889-90 

 with that for 1890-93 shows a decrease of speed during the latter 

 period. Here we ask, how as to bulk in those years? Fluctuations 

 of the terminal faces of the Tasman and Mueller glaciers have been 

 constantly remarked, but changes have not lasted sufficiently long 

 to show if the ice be retreating or advancing. Captain Hutton, F.R.S., 

 President of the New Zealand Alpine Club, states that about 1882 

 the Mueller glacier reached over the Hooker River to the side of 

 Mount Cook, and sheep were taken over on the ice. Traverses were 

 made of the terminal faces of the Tasman in November, 1890, and 

 of the Mueller in March, 1889, and November, 1890. Mr. Brodrick 

 says that the Hooker Eiver so modifies the contour of the Mueller 

 that the experiment has failed to demonstrate short changes satis- 

 factorily, though these traverses will no doubt be of interest in. 

 the future. During a recent period all the Canterbury glaciers 

 appear to have been in retreat, but latterly, and for a number of 

 years, to have been stationary. 



There is no evidence of ploughing up the earth and leaving it in 

 ridges, and falling stones are in great measure stopped by lateral 

 moraines, and do not reach the ice. Mr. Brodrick gives tables of 

 rates of motion, and one of the areas of six glaciers, together with 

 that of the sources of supply, as regards neve. 



la E "V" I IE AAT S. 



The Seismological Journal of Japan. Vol. IV, 1895 (corre- 

 sponding to vol. XX of the " Transactions of the Seismological 

 Society) : Edited by Prof. J. Milne, pp. xxi + 367. 



Contents : A Catalogue of 8331 Earthquakes recorded in Japan between 188a 

 and 1892, by Prof. John Milne, F.E.S., F.G.S. 



"ANY of the preceding volumes of this well-known series may 

 have possessed a wider interest, but few, if any, are of greater 

 value, or will more profoundly influence the pi-ogress of seismology, 

 than that which is now before us. This evidently is a work which 

 is neither to be "tasted" nor " swallowed," nor even to be "chewed 

 and digested." It is intended for those who make books, not for 

 those who read them. It will be the parent of many papers. For 

 in these somewhat unattractive-looking pages are gathered materials 

 for the harmonic analyzer and facts for the student of terrestrial 

 evolution. Only the labour is required, and that will soon be 

 forthcoming, and we shall know something about the laws which 

 govern the distribution of earthquakes in space and time, at any 



