SCIENTIFIC PAPERS OF HENRY. 373 



■ 1872. On certain Abnormal Phenomena of Sound, in connection with Fog-eignals. 

 (Read Dec. 11.) Bulletin Phil. Soc. Washington, vol. i. p. 65, and Appendix 

 ix. 8 pp, 

 1873. Letter to John C. Green, Esq. of New York, on his eBtabliehment of the 

 "Henry Chair of Physics" in the College of New Jersey, Washington 

 Daily Chronicle, Mar. 21, 1873. 



1873. On Telegraphic Announcements of Astronomical Discoveries. (May.) Smith- 

 sonian Miscell. Collections, No. 2G3, vol. xii. pp. 1-4. 



1873. Remarks on the Light-House Service. Report of Light-House Board, 1873, 



pp. 3-7. 



1874. Report of Investigations relative to Fog-Signals, and certain abnormal 



phenomena of Sound. Report of Light-House Board, 1874. Appendix, pp. 

 83-117. 



1874. Memoir of Joseph Saxton. (Read Oct. 4.) Biographical Memoirs of Nat. 

 Acad. Sci. vol. i. pp. 287-316. 



1874. Remarks on Recent Earthquakes in North Carolina. Smithsonian Report, 



1874, pp. 259, 260. 



1875. Remarks on the Light-House Service. Report of Light-House Board, 1875, 



pp. 5-8. 



1875. An account of investigations relative to Illuminating Materials. Report of 

 Light-House Board, 1875. Appendix, pp. 86-103. 



1875. Investigations relative to Sound. Report of Light- House Board, 1875. Appen- 

 dix, pp. 104-126. 



1875. On the Organization of Local Scientific Societies. Smithsonian Report, 1875, 



pp. 217-219. 



1876. Article on "Fog," for Johnson's Universal Cyclopaedia. Edited by Dr. Bar- 



nard. J. Univ. Cycl. vol. ii. pp. 187, 188. 



1876. Article on "Fog-Signals" for Johnson's Universal Cyclopaedia. Edited by 

 Dr. Barnard. J. Univ. Cycl. vol. ii. pp. 188-190. 



1876. Article on "Hygrometry" for Johnson's Universal Cyclopaedia. Edited by 

 Dr. Barnard. J. Univ. Cycl. vol. ii. pp. 1072-1074. 



1876. Letter to Rev. S. B. Dod ; on researches made at Princeton. (Dated Dec. 4.) 



Princeton Memorial, May 19, 1878, 8vo. N. Y. pp. 51-70. 



1877. Article on "Lightning" for Johnson's Universal Cyclopaedia. Edited by Dr. 



Barnard. J. Univ. Cycl. vol. iii. pp. 32-36. 



1877. Article on "Lightning-Rods" for Johnson's Universal Cyclopaedia. Edited by 

 Dr. Barnard. J. Univ. Cycl. vol. iii. pp. 36, 37. 



1877. Remarks on the Light-House Service. Report of Light-House Board, 1877, 



pp. 3-7. 

 1877. Report of Operations relative to Fog-Signals. Report of Light-House Board, 



1877. Appendix, pp. 61-72. 



1877. Address before the Philosophical Society of Washington. Bulletin Phil. Soc. 

 Washington, vol. ii. pp. 162-174. 



