IV 
CONTENTS. 
PAGE 
The Geology of Mont Cenis Tunnel. By Prof. Ansted, F.R.S. 
(with Map and Section) ... ... ... 337 
Greenwich Time and its Telegraphic Distribution. By W. 
Ellis, F.R.A.S 355 
The Echinus, or Sea-Urchin. By St. G. Mivart, F.R.S. Ulus- 
trated ... 
... ... 
366 
The Sun's Corona. By R. A. Proctor, B.A., F.R.A.S. 
378 
Machine-Guns, or Mitrailleuses. 
By S. J. Mackie, C. E. ... 391 
Reviews of Books 
Scientific Summary: — 

65, 178, 291, 407 
Astronomy 

75, 188, 302, 417 
Botany ., 
... 
79, 193, 306, 422 
Chemistry 
... 
83, 197, 309, 423 
Geology and Palaeontology 
... 
87, 200, 313, 428 
Mechanical Science 
... .... ... 
92, 205, 316, 431 
Medical Science 
... ... ... 
94, 207, 317, 433 
Metallurgy, Mineralogy, and Mining 
99, 210, 321, 438 
Microscopy 
... 
101, 213, 322, 441 
Photography 

102, 215, 326 
Physics ... 
... ... 
105, 217, 328, 443 
Zoology and Comparative Anatomy 
109, 221, 331, 446 
