MODERN SCIENCE SERIES. 



Edited by Sir JOHN LUBBOCK, Bart., M.P. 



I. The Cause of an Ice Age. 



By Sir Robert S. Ball, LL. D., F. R. S., 

 Royal Astronomer of Ireland. 



II. The Horse: 



A Study in Natural History. 

 By William Henry Flower, C. B., 

 Director of the British Natural 

 History Museum. 



nL The Oak: 



A Popular Introduction to Forest 

 Botany. 

 By H. Marshall Ward, F. R S. 



IV. Ethnology in Folklore. 



By George Lawrence Gomme, F. R. S,, 

 President of the Folklore Society, 

 etc. 



V. The Laws and Properties of Matter. 



By R. T. Glazebrook, F. R. S. 



VI. The Fauna of the Deep Sea. 



By Sydney J. Hickson, M. A., Fellow 

 of Downing College, Cambridge. 



Others in preparation. 



New York: D. Appleton & Co., i, 3, & 5 Bond St. 



