CONTENTS OF VOL. VIII. FIFTH SERIES. Vll 



Mr. W. C. Boberts on an Analogy between the Conductivity 

 for Heat and the Induction-Balance Effect of Copper-Tin 



Alloys 551 



Dr. O. J. Lodge on a Determination of the Specific Electrical 



Resistance of certain Copper-Tin Alloys 554 



Mr. L. Schwendler on a Simple Method of using an insignifi- 

 cant Eraction of the main Current produced by a Dynamo- 

 electric Machine, for Telegraph-purposes 558 



Notices respecting New Books : — 



Eeport on the Administration of the Meteorological De- 

 partment of the Government of India, 1877—78 ....... 562 



Mr. J. Eliot : Report on the Meteorology of India in 



1877, and on the Madras Cyclone of May 1877 562 



Proceedings of the Geological Society : — 



Dr. C. Callaway on the. Pre-Cambrian Rocks of Shrop- 

 shire - 564 



Messrs. Jolly and Macdonald-Cameron on a Remarkable 

 and apparently New Mineral in the Rocks of Inverness- 

 shire 565 



Mr. G. Attwood on South- American Geology 565 



Mr. J. Buckman on the so-called Midford Sands 566 



Mr. E. Wilson on the Physical Geography of the North- 

 east of England in Permian and Triassie Times 566 



Mr. J. D. Kendall on the Eormation of Rock-basins .... 567 

 Mr. S. Allport on the Diorites of the Warwickshire Coal- 

 field 567 



Mr. C. B. Brown on the Ancient River-deposit of the 



Amazon 567 



Mr. C. Reid on the Glacial Deposits of Cromer 567 



Mr. H. B. Woodward od a Disturbance of the Chalk at 



Trowse, near Norwich 568 



Mr. T. M. Reade on a Section of Boulder-clay and Gra- 

 vels at Ballygalley Head 569 



Prof. S. Calderon on the Augitic Rocks of the Canary 



Islands 569 



Mr. J. E. Marr on the Cambrian and Silurian Beds of 



the Dee Valley , 569 



On a Pile with Chloride of Lime, by Alf. Niaudet 570 



On the Abnormal Spectrum of Light, by M. de Klercker, of 



Stockholm 571 



On the Explosion of a Diamond, by Prof. Leidy 572 



