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NO. 2294, VOL. 92] 
NATURE 
[OcToBER 16, 1913 
DIARY OF SOCIETIES. 
THURSDAY, Ocrover 16. 
InstituTION oF Mininc AND METAaLtOrcy, at 8.—Laterization in Minas 
Gerzes, Brazil: J. H. Goodchild.—An Example of Secondary Enrich- 
ment: W. F. A. Thomae.—The Effect of Charcoal on Gold-Bearing 
Cyanide Solutions with» Reference to the Precipitation of Gold: 
Morris Green. . 
FRIDAY, Ocroser 17- 
Junior InsTituTion OF ENGINEERS, at 8,—Education; some Random 
Reflections : G. Evetts. x : 
THURSDAY, Ocroser 23. 
InsTITUTION oF Civit ENGINEERS, at 9.—Progress of Marine Construc- 
tion: Alex. Gracie. j 
FRIDAY, Ocroser 24. 
INSTITUTION OF MECHANICAL ENGINEERS, at 8.—Modern Flour Milling 
Machinery: R. B. Creak. 
Puysicar Society, at 5.—The Ice Calorimeter : E. Griffiths. —An Electro- 
static Oscillograph : H. Ho and S. Koté. es 
CONTENTS. 
British Fish Parasites).c 3 3. «|. sea 5 193 
Disease and Its Prevention... - - <:)5 see 193 
Mathematical Text-Books!'; 2.5 . 5.) o-saeeee 195 
Our Bookshelf . . . o%.-6 0% ma) oy ene 196 
Letters to the Editor :— 
The Piltdown Skull and Brain Cast. (J//ustrated.)—— 
Prof. A. Keith, FJR.S2 ©... Sv) svyeneeee “197 
The Theory of Radiation-—Prof, J. W. Nicholson 199 
Science and the Lay Press.—One of the Reporters ‘ 
Present: > Gps eae oe a » 199 
The Glasgow Memorialto Lord Kelvin. (///ustrated.) 200 
The Prehistoric Society of East Anglia. ..... 201 
MRORCS) nw 8. 8. 5) wes esi ot mn pt alee 201 
Our Astronomical Column :— ; ; 
Brilliant Meteor of October7...... “tora 206 
Cometary Observations in Ig09 to 1912... ... .. 206 
Normal System of Wave-lengths in the Spectrum of 
the Iron Are’ 2." 0) 5 mitwya > . , 206 
Microscopical Examination of Skin and Leather. _ 
ByJ. G. Pe. si ais a) a, llel ns Spe 206 
The British Association at Birmingham : — 
Section H.-—Anthropology.—Opening Address by 
Sir Richard C, Temple, Bart,, C.I.E., Presi- 
dent of the Section =i9. ©) . 02. = ucueene 207 
Section I.—Physiology.—Opening Address by F. 
Gowland Hopkins, F.R.S., President of the 
Section. . 0.55 «205. 2 Se 213 
University and Educational Intelligence. . . . : . 223 
Societies and Academies ©... < .°: c/a scene 224 
Books Received |. .') 5 ss He 225 
Buary of Societies. . 6°55 21.29 oe 226 
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