SCIENCE-ADVERTISEMENTS 



Cambridge University Press, England 



Flies in Relation to Disease — Non=Bloodsucking Flies 



By G. S. GRAHAM-SMITH, M.D. $3.50 net 

 The first volume of the Public Health Series 



The books included in the Series present in a useful and handy form the knowl- 

 edge now available in many branches of the subject. They are written by experts, 

 and the authors are occupied, or have been occupied, either in investigations con- 

 nected with the various themes or in their application and administration. They 

 include the latest scientific and practical information offered in a manner which is 

 not too technical. The bibliographies contain references to the literature of each 

 subject which will ensure their utility to the specialist. — Extract from the general preface. 



Detailed Catalogue sent on request 



Recent additions to the 



Cambridge Manuals of Science and Literature 



80 volumes ready : others in active preparation. 40 cents net per volume. 



No. 71. Natural Sources of Energy. A. H. Gibson. 



" 72. The Fertility of the Soil. E.J.Russell. 



" 73. The Life Story of Insects. G. H. Carpenter. 



" 74. The Flea. H. Russell. 



" 75. Pearls. W. J. Dakin. 



" 76. Naval Warfare. J. R. Thursfield. 



" 77. The Beautiful. Vernon Lee. 



" 78. The Peoples of India. J.D.Anderson. 



" 79. The Evolution of New Japan. J. H. Longford. 



" 80. A Grammar of Heraldry. W. H. St. John Hope. 



G. P. 



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