374 MEMORIAL OF JOSEPH HENRY. 



1878. On Thunder Storms. (Letter Oct. 13.) Journal Am. Electrical Society, 1878 r 



vol. ii. pp. 37-44. 

 1878. Letter to Joseph Patterson, Esq. of Philadelphia, on the "Joseph Henry 



Fund." (Dated Jan. 10.) Public Ledger and Transcript, May 14, 1878. 



The Press : of Philadelphia, May 14, 1878. 

 1878. Report on the Ventilation of the Hall of the House of Representatives. (Jan. 



26.) 45th Cong. 2nd Sess. H. R. Report, No. 119, pp. 1-6. 

 1878. Report on the Use of the Polariscope in Saccharimetry. (Feb. 5.) Mis. Doc, 



45th Cong. 2nd Sess. H. R. 

 1878. Opening Address before the National Academy of Sciences. (Read April 16.) 



Proceedings Nat. Acad. Sci. vol. i. part 2, pp. 127, 128. 

 1878. Closing Address before the National Academy of Sciences. (Read April 19.) 



Proceedings Nat. Acad. Sci. vol. i. part 2, pp. 129, 130. 



