SCIENTIFIC AND MEDICAL continued. 



LIFE AND LETTERS OF JOSEPH BLACK, M.D. By 

 Sir WILLIAM RAMSAY, K.C.B., LL.D., F.R.S., etc. Intro- 

 duction by F. G. DONNAN, F.R.S. 



Demy 8vo. Frontispiece Portrait and Illustrations. 6s. 6d. 

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ROBERT BOYLE : A Biography. By FLORA MASSON. 



Frontispiece. Demy 8vo. 73. 6d. net. 



"May be recommended as an excellent study of the great 

 Irishman to whose services as natural philosopher and chemist even 

 modern scientists owe a debt of gratitude." Pall Mall Gazette, 



THE LIFE OF SIR CHARLES TILSTON BRIGHT. 

 By CHARLES BRIGHT, F.R.S.E. Revised and Abridged. 



Illustrations. Demy 8vo. I2s. 6d. net. 



" The life story of Sir Charles Bright presents the career of a 

 famous Englishman with all the charm of simplicity and enthusiasm. 

 ... As the chief engineer of the Atlantic cable Sir Charles 

 Bright will always have a memorable place in the scientific pro- 

 gress of this century. . . . These volumes possess a special interest 

 for men of science, but they tell with clearness and simplicity the 

 career of a man of whom Englishmen must always feel proud." 

 Morning Post. [Spring 1921.] 



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