Miscellaneous Intelligence. 581 



5. Harvard College Observatory ; Edward C. Pickering, 

 Director. Recent publications are noted in the following list 

 (continued from vol. xxix, p. 276). 



Annals. Vol. LIX, No. 6. Photographic Magnitudes of 153 

 Stars ; by Edward S. King. Pp. 157-1 86. 



Vol. LXV. Journals of Zones observed with the 8-inch 

 Meridian Circle during the years 1888-1890 ; by Arthur 

 Searle. Pp. 264. 



Vol. LXVI. Journal of Zones observed with the 8-inch Merid- 

 ian Circle during the years 1890-1898 ; by Arthur Searle. 

 Pp. 253. 



Vol. LXXI, No. 1. Standard Photographic Magnitudes of 

 Bright Stars ; by Edward C. Pickering. Pp. 25. 



Circulars. No. 153. Opposition of Eros (433) in 1910. Pp. 3. 



No. 154. Determination of Absolute Wave-lengths with 

 Objective Prisms. Pp. 4, 6 figures. 



No. 155. Accurate Measurements of Photographs. Pp. 3. 



No. 156. Comparison Stars for Halley's Comet. Pp.3. 



No. 157. Brightness of Halley's Comet. Pp. 3 ; one figure. 



No. 158. Stars having Peculiar Spectra. 38 New Variable 

 Stars. Pp. 3. 



No. 159. 15 New Variable Stars in Harvard Map, Nos. 7, 10, 

 16, and 19. Pp. 3. 



No. 160. Photographic Magnitudes. Progress to July, 1910. 

 Pp. 6. 



No. 161. Curved Photographic Plates. Pp. 3, 2 figures. 



No. 162. 22 Variable Stars in Harvard Map, No. 52. Pp. 3. 



No. 163. 181,325. Nova Sagittarii, No. 3. H. V. 3306. Pp. 



3 ; one plate, 3 figures. 



Sixty-fifth Annual Report of the Director of the Astronomical 

 Observatory of Harvard College for the year ending September 

 30, 1910; by Edward C. Pickering. Pp. 10. 



6. Publications of the Cincinnati Observatory. — The follow- 

 ing memoir has recently appeared: No. 17. Micrometrical Meas- 

 ures of Nebulae 1905 to 1910 ; by Jermain G. Porter, Director. 

 Pp. 3-72. Cincinnati (Published by Authority of the Board of 

 Directors of the University), 1910. 



7. Contributions from the Princeton University Observatory. 

 — The following memoir from the Princeton Observatory has 

 recently appeared : No. 1. Photometric Researches : The Algol- 

 System Rt Persei ; by Raymond Smith Dugan. Pp. 47, with 



4 tables. Princeton, 1911. 



8. H. Comitato Talassogrqftco Ilaliano. — A committee, hav- 

 ing as its object the study of the Italian seas, was appointed in 

 1909, and later it was formally established by act of the Italian 

 government. This committee, of which the Marine minister is 

 the president, has the task of making investigations of the Italian 

 seas from the physical, chemical, and also biological point of 

 view. The practical questions concerning the navigation and 



Am. Jour. Sci. — Fourth Series, Vol. XXXI, No. 186.— June, 1911. 

 39 



