ADVERTISEMENT. 



The "Toner Lectures" have been instituted at Washington, 

 D. C, by Joseph M. Toner, M.D., who has placed in charge of 

 a Board of Trustees, consisting of the Secretary of the Smith- 

 sonian Institution, the Surgeon-General of the United States 

 Army, the Surgeon-General of the United States Navy, and 

 the President of the Medical Society of the District of Colum- 

 bia, a fund, "the interest of which is to be applied for at least 

 two annual memoirs or essays relative to some branch of medi- 

 cal science, and containing some new truth fully established by 

 experiment or observation." 



As these lectures are intended to increase and diffuse knowl- 

 edge, they have been accepted for publication by the Smith- 

 sonian Institution in its " Miscellaneous Collections." 



The First Lecture of this series was delivered Marcli 28, 

 1873, by Dr. J. J, Woodward, "On the Structure of Cancer- 

 ous Tumors and the Mode in which adjacent parts are invaded." 

 Published by the Smithsonian Institution, November, 1873. 

 44 pp. 8vo. 



The Second Lecture was delivered April 22, 1874, by Dr. 

 C. E. Brown-Sbquard, on the " Dual Character of the Brain," 

 from a phonographic report of which the lecture has been 

 printed. On account of absence from the country tlie author 

 has not had the opportunity of revising the lecture or of cor- 

 recting the proofs. 



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