/J 



„ „. 1 

 5 



Nature 



t'l 



A WEEKLY 



ILLUSTRATED JOURNAL OF SCIENCE 



VOLUME CII 



SEPTEMBER, 1918, to FEBRUARY, 1919 



" To the solid ground 

 Of Nature trusts the mind which builds for aye." — Wordsworth 



$onDon 



MACMILLAN AND CO., Limited 



NEW YORK : THE MACMILLAN COMPANY 



