Every Thursday, price 4d.; Monthly Parts, Is. 4d. and Is. 8d- 

 Half-yearly Volumes, 10s. 6d. 



A WEEKLY ILLUSTRATED JOURNAL OF SCIENCE. 



IT is now nearly four years since NATURE first appeared, and the Pub- 

 lishers only state the acknowledged truth when they say that it has 

 become the accredited organ of the leading scientific men in both the Old 

 and the New World. 



No man can now lay claim to be considered intelligent and well-read 

 unless he knows something of the principles of Science, and keeps him- 

 self au courant with the most recent developments of scientific principles 

 in the various Arts. The all-important part w r hich is being gradually 

 assigned to Science in Education, in the Arts and Manufactures, in 

 Commerce, and in Social Economy, is evident to all : and there is no 

 surer sign of a wide-spread regard for Science than the desire which 

 exists among all classes of intelligent readers for scientific literature 

 which is not beyond the range of those who can read and think. 



One of the great aims of the publishers of NATURE is to awaken in 

 the public mind a more lively interest in Science. With this end in view 

 it provides Original Articles and Reviews, written by scientific men of 

 the highest distinction in their various departments, expounding, in a 

 popular and yet authentic manner, the GRAND RESULTS OF SCIENTIFIC 

 RESEARCH, discussing the most recent scientific discoveries, and point- 

 ing out the bearing of Science upon civilization and progress, and its 

 claims to a more general recognition, as well as to a higher place in the 

 educational system of the country. 



The CORRESPONDENCE columns of NATURE, while forminga medium 

 of scientific discussion and of intercommunication among the most 

 distinguished men of Science, have become the recognised organ for 

 announcing new discoveries and new illustrations of scientific principles 

 among observers of Nature all the world over, from Japan to San 

 Francisco, from New Zealand to Iceland. 



