CATALOGUE OF PUBLICATIONS. 531 



834. Questions Relative to tlie Food Fishes of the United States. By 

 S. F. BaiIvD. ISTl. 8vo., pp. 14. (M. C, x.) 



235. lustructious for Observations of Thunder Storms. By Joseph 



Henry. 1871. 8vo., p. 1. (M. C, x.) 



236. Circular lielative to Heights. By Joseph Henuy. 1871. 8vo., 



pp.2. (M. C.,x.) 



237. Directions for constructing- Lightning Rods. By Joseph Henry. 



1871. 8vo., pp. 4. (x^I. C, X.) 



238. LivSt of the Institutions, Libraries, Colleges, and other Establish- 



ments in the United States in correspondence witli the Smith- 

 sonian Institution. By William J. Rhees. July, 1872. 8vo., 

 ])p. 250. (M. C , X.) 



239. Observations on Terrestrial Magnetism, and on the Deviations of 



the Compasses of the United States Iron Clad Monadnock dur. 

 ing; her cruise from Philadelphia to San Francisco, in LSG5 and 

 18GG. By William Harkness. 1872. 4to , i)p. 22(», 2 wood- 

 cuts. (S. C, XVIII.) 



240. Problems of Rotary Motion presented by the Gyroscope, The Pre- 



cession of the Equinoxes, and The Pendulum. By J. G. Bar- 

 nard. 1872. 4to., pp. 5G, G wood-cuts. (S. C, xix.) 



24L A Contribution to the History of the Fresh Water Alg:e of North 

 America. By HoRATio C. Wood, Jr. 1872. 4to., pp. 272, 21 

 plates of 340 ligures. (S. C, xix.) 



242. Lucernaria^, and their Allies. A Memoir on the Anatomy and 



Physiology of Haliclystus Auricula and other Lucernarians, with 

 a Discussion of their Relations to other Acalephte, to Beroids 

 . and Polypi. By H. J. Clark. 1878. 4to., p[). 138, 11 plates 

 of 149 figures. (S. C, xxii.) 



243. List of Foreign Correspondents of the Smithsonian Institution ; 



corrected to January, 1872. 1872. 8vo., pp. 06. (M. C, x.) 



244. Annual Report of the Board of Regents of the Smithsonian Insti- 



tution, for the year 1870. Forty-secoTid Congress, first session. 

 House of Representatives, Ex. Doc. No. 20. 1871. 8vo., pp. 

 494, 23 wood-cuts. 



COXTENTS. 



Henry, J. Secretary's report of operatious. 



Board of Eegents. Proccetliugs of. 



List of meteorological stations and observers. 



List of meteorological material contributed to Smithsonian Institution. 



Henry, J. Eulogy on Alexander Dallas Baclie. 



Bache, a. D. Lecture on Switzerland. 



Henry, J. On a physical observatory. 



