S. Mis. 53. 45 



REPORT OF THE ASSISTANT SECRETARY, IN CHARGE 

 OF THE MUSEUM, &c. 



To Joseph Henry, LL. D., 



Secretarij of the Smithsonian Institution : 



Sir : In obedience to your requirement, I have the honor herewith 

 to present a report upon the following branciies of operations given 

 into my charge. 



I.— PUBLICATIONS. 



In no previous year have the publications of the Institution been so 

 numerous and varied as in the one just passed. In addition to two 

 quarto volumes of Smithsonian Contributions to Knowledge, a consid- 

 erable number of" octavo worlds and miscellaneous matter have been 

 issued. 



The following list contains an enumeration of the separate articles in 

 volume III, Smithsonian Contributions to Knowledge, the whole making 

 a volume of 564 quarto pages, and 35 plates. With the exception of 

 Nos. 3, 8, and 9, aU were issued during 1S52. 



List of Memoirs in volume III, Smithsoniari Contributions. 



1. Observations on Terrestrial Magnetism. By John Locke, M. D., 



M. A. P. S. ; pp. 30. 



2. Researches on Electrical Rheometr}^ By A. Secchi ; pp. GO, and 



three plates. 



3. Contributions to the Natural History of the Fresh Water Fishes of 



North America. By Charles Girard — I. A Monograph of the 

 Cottoids ; pp. 80, and three plates. 



4. Nereis Boreali-Americana, or Contributions to a History of the Ma- 



rine Alga:; of North America. By William Henry Harvey, M. D., 

 M. R. I. A.; Part I, Melanospermea'; pp. 152, and twelve plates. 



5. PlanU'c Wrightianas Texano-Neo-]Mcxicante. By Dr. Asa Gray, 



INI. D. ; Part I ; pp. 146, and ten plates. 



6. The Law of Deposit of the Flood Tide; its Dynamical Action and 



Office. By Charles Henry Davis, Lieut. U. S. Navy ; pp. 14. 



7. Description of Ancient Works in Ohio. By Charles Whittlesey ; 



pp. 20, and seven plates. 



8. Occultations visible in the United States during the year 1852. 



Computed by John Downes, esq. ; pp. 34. 



9. Ephemeris of Neptune for the year 1852. By Scars C. Walker, 



esq. ; pp. 10. 



