A/>ril 



Nature, "I 

 rV 15, iQtsJ 



Nature 



A WEEKLY 



ILLUSTRATED JOURNAL OF SCIENCE 



VOLUME XCIV 



SEPTEMBER, 1914, to FEBRUARY, 1915. 



" To the solid ground 

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



Jon Don 



MACMILLAN AND CO.. Limited 

 NEW YORK: THE MACMILLAN COMPANY 



