108 



PhotograpMc Spectra by Annie J. Cannon. — Vol. LVll. Part II. Comp- 

 arison Stai's for 152 variables of long Period, prepared for publication by 

 L. Campbell. 1908. — Vol LVIII. Part III, Observations and investiga- 

 tions made at tbe Blue Hill Meteorological Observatory in the Year 1905, 

 under the direction of A. L. Rotcb. 1908.— Vol. LIX. Partí. Standard 

 Tests of Photographic Plates, by Ed. S. King. — Part II. Photographic 

 Photometry on a nniform Scale, by E. S. King. — Part III. Lunar Pho- 

 tometry and Photograpliic Sensitiveness at different temperatures, by Ed. 

 8. King. — Part IV. Pkotographic Magnitudes of Bright Btars, by Ed S. 

 King. — Vol. LX. Part VI. Nebulae disco vered at the Observatory. — Part 

 VII. Double Stars South of-30o, and of magnitude 6.3 to 7,0. Part VIII. 

 A Catalogue of Bright Glusters and Nebulae. By S. I. Bailey. — Part IX. 

 A Catalogue of Photographic Charts of the Sky. 1908.— ToZ. LXI. Part I. 

 Eesearches of the Boy den Department, by Wm. H. Pickering. 1908. — Part 

 II. A search for a Planet beyond Neptune. by Wm. H. Pickering. 1909. 

 — Vol. LXIV. Partí. Observations with the Meridian Photometer during 

 the Years 1902 to 1906.— Parí 11 The variable Star SS Cygni. 213843. By 

 L. Campbell. — Part III. Schonfelds comparison Stars for variables.— Parí 

 IV. Discussion of the Eevised Harvard Photometry. 1909.— Parí V. Ob- 

 servations on J. D. 3182 with the 4-inch Meridian Photometer. 1909.— 

 Part VI. Magnitudes of componen ts of Double Stars. 1909. — Vol. LXVIII. 

 Part I. Observations and investiga ti ons at the Blue Hill Observatory. Ex- 

 ploration of the air with balloons-sondes, at St. Lonis, and with kites at 

 Blue Hill, by H. H. Clayton and S. P. Fergusson. 1909. 



Circulars, in 4, pl.— No. 131. Group of red Stars near Nova Velorum. 

 No. 132 & 143. Stars having peculiar Spectra. New variable Stars. — Nos. 

 133-135, 137, 140 & 142. New variable Stars in Harvard Maps. — No. 136. 

 Comparison Stars for U aeminorum. — No. 138. 060547. The variable 

 Star, 31, .1907.— No. 139, -26°179. A new variable of the Class of /? Lyrae. 

 003226, — Ne. 141. 29 new variable Stars near Nova Sagitarii. — No. 144. 

 Ephemeris of Morehouse Comet (1908 c), for 1909.— No. 45. Asixth type 

 of Stellar Spectra. — No. 146. The ConsteUation Camelopardalis.— No. 147. 

 Distribution of the Stars.— No. 148. Morehouse Comet. 1908 c. 



Coast and Geodetic Survey. O. H. Tittmann, Superinten- 

 dent.— Geodesy. The Figure of the Eaith and Isostasy from mea- 

 surements in the United States. By John F. Hayford, Inspec- 

 tor of Geodetic Work, and Chief , Oomputing División.— Was- 



