THE ROMANCE OF SCIENCE continued 



THE MACHINERY OF THE UNIVERSE: 



Mechanical Conceptions of Physical Phenomena. By the late 

 Professor A. E. DOLBEAP, A.B., A.M., M.E., Ph.D. With several 

 Illustrations. Post 8vo, cloth boards, 2s. 



The Shipping Gazette says: "The book is one that should enable any 

 intelligent reader to grasp the latest theory about the causes of all physical 

 phenomena. It lifts the veil of the visible, introducing us to the hidden 

 mechanism behind it." 



DISEASES OF PLANTS 



By the late H. MARSHALL WARD, M.A., F.R.S., F.L.S. With 

 numerous Illustrations. Post 8vo, cloth boards, 2s. 6d. 



The Farmer's Magazine says : " We have the most simply and clearly 

 written descriptions, with good illustrations, that we have yet seen on the 

 leading diseases to which plant life is subject." 



THE SPLASH OF A DROP 



By Professor A. M. WORTHINGTON, C.B., F.R.S. With numerous 

 Diagrams. Post 8vo, cloth boards, is. 6d. 



Knowledge says : " The splash of a drop occurs in the twinkling of an 

 eye ; yet it is an exquisitely regulated phenomenon. . . . The study of the 

 splash of a drop is so unique and interesting that all of a curious turn of 

 mind should secure this little volume." 



SOUNDING THE OCEAN OF AIR 



By A. LAWRENCE ROTCH, S.B., A.M., Director of the Blue Hill 

 Meteorological Observatory, Massachusetts, U.S.A. With numerous 

 Illustrations. Post 8vo, cloth boards, 2s. 6d. 



Nature says : "A cordial welcome for this little book may be anticipated. 

 ... Its author has won for himself a prominent place among those who 

 are best acquainted with modern ways of sounding the ocean of air." 



5 



