KNOWLEDGE. 



Stilt-walkers— 



By E. A. BiTi.ER 



Stonehenge, The Date of— 



Letter on ; by A. Fowler 

 Note on 



Sudan, Travelling in the— 



Note on 



Sun-pillar of March 6, The Great- 

 Letter on; by S. R. Stawell Brown . . 84 

 Letter on ; by Catharine 0. Stevens ... 81 

 Letter on ; by K, J. KoisEHTs ... 158 



Sunshine and Cloudy Condensation, Dr. 

 Aitken on — 



158 

 14 



15 



By Dr. J. G. McPhebson 



2-14 



Telescopes, The Use of Hand, in Astronomy— 



By Cecil Jackson 32,60,81,156 



Telescopes, The Use of Hand- 

 Letter on; by M. Habe ... 62 



Letter on ; by F. W. Levanher 133 



Thermometer, The History of Fahrenheit's— 



By Sir Samuel Wilks ... .. ... 29 



Letter on ; by Cleveland Abbe ... ... 109* 



Letter on ; by Sir Samuel Wilks ... ... 181 



Thrush, The Domestic Economy of the— 



As observed by A. H. Machell Co.k ... ... 269 



Tycho, A Modern- 

 Letters on ; by A. fif. Gaerett 



182, 254 



Vegetable Mimicry and Homomorphism — 



By Rev. Ale.\. S. Wilson 27, 76, 127, 171, 235 



Yenus, The Visibility of the Crescent of— 



Letter on ; by B. P. Selhy 109 



Note on ; by E. W. Maunder 110 



Letter on; by James Kodueb 110 



Letter on ; by Edwin Holmes . ... 182 



Letter on; by R. J. Eyle .. ... 157 



Letter on ; by J. W. Meares 203 



Letter on ; by Joseph Ofkobd ... 253 



Letter on; by Lieut. -Colonel A. W. Mansehgh 277 



Vibration, The, produced by the Working of the 

 TraflBc on the Central London Railway — 



By Charles Davison 121 



Yirchow, Rudolph — 



By Sir Samuel Wilks 229 



fflilks, Sir Samuel, M.D., LL.D., F.R.S.- 



The History of Fahrenheit's Thermometer ... 29 



Letter on Fahrenheit's Thermometer ... 131 



Rudolph Virchow 229 



Wilson, Rev. Alex. S., M.A., B.Sc— 



Vegetable Mimicry and Homomorphism 



27, 76, 127, 171, 235 



Wing-Links — 



By E. A. Butler 65 



Witherby, Harry F., F.Z.S., M.B.O.U.— 



Across Russian Lapland in search of Birds — 



I. Vardoe and the White Sea ... 25 



n. Archangel, a Wonderful Monastery, 



and the Effects of Vodka 88 



IIL Forest, Lake, and Marsh 128 



IV. Li the Birch Scrub and on the Rocky 



Coast 222 



The Migrations of the Skylark and the 

 Swallow 52 



Wolf, Dr. Max— 



The "America" Nebula in Cygnus ... 



The " Triple Cave " in Aquila 



Worlds, Distant : A Review of Some Recent 

 Studies in Stellar Distribution — 



156 

 203 



By C. E ASTON 



151. 170 



