772 ASTRONOMICAL. 



Time (Determiuatiou of) — Coutiuued. 



CoMSTociv (d. C.) Efficiency of ;i snmll iustriiuieiit. Sid. Mess., 10: 406-9. 

 1891. 



Hedrick (J. T.) Probable error of the dock correctioji wheu both the clock 

 rate and the iustrumeutal coustauts arc found by a least squares solution of a 

 single night's observations. Mouth. Not., 53: 22-7. 1892. 



Time (Universal). 



WoLK (('.) 'reiii])s local et I'lieure miiverselle. L'Astioii., 11: 49-56. 1892. 



Tisseraiid (Felix). 



Fov Bloyraphi/ K<f l/Astiioi., \] : Mi. IMtl!. 

 For Portrait ^eeihid.. :ur). 

 Transit Instrument. 



Hicuz (N.) Tlieorie eiues uiit eineni Wrticalkreise verseheiien rassagc-luslru- 

 iiientes ini ei'steii N'erticale. 18 )>. Ito. Wieu, ISiU. 



Transit Observations. 



Bkckek (E.) Vcrsuche vou Diirchgaiigs lieobaclituiigeii nach deui iieuen IJcp- 



soldscheu Verfaliren. Astroii. Naclii-., 127: 1S5-90. 1891. 

 Jacoby (11.) J.'ediictinii (»!' traii.sit (il)scrv,i^i<ms by Mie method of least s(]uares. 



Month. Not., 52: Ui-7. 1^91. 

 Sai-1()i;i> (T. H.) Observation (if iiiirth jiolar stais in the vertical of 'I'ohu-is. 



Aslrou. Naelir., 128: :;7!)-X2. 18!II. 

 Trans-Neptunian Planet. 



KOKKKTs (I.) ]'hoti)gra])iiir scardi tor a phiiiet btyniid tlie orliit of Neptiuie. 



Month. Not.. 52: .■.01. 1S92. 



Unites States Naval Observatory. 



Bill defining the ](ositioiis and salaries of assistant astronomers. 52 Cong., I 



sess. S. 821. Dec. 11, 1S91. 

 [Bill to jjrovide a moic ]>erl'cit organization.] 52 Cong.. 1 sess. t^. 173o. 1892. 

 Bo.s.s(L.) An irrepressible <t>ntlier. Sid. Mess.. 10: 161-8. 18!ll. 

 . Proposed reform in the nianagenient of the new Naval observatory. A 



statement in respect to the I'. S. Naval Observatory and its organization. 



68 ]). 8vo. Albany, 18!il. 

 CliANCiK of management recjnired for the I'nited states Naval observatory. 15 



p. 8vo. [n. i>.] 1892. 

 HoLDEX (E. S.) [Policy of its administration.] Pub. Astron. Soc, Pacific, 



3:74. 1891. 

 Report. . . June 30. bS91. Kept. Sec. C. S. Navy. 1891 : 122-31. J /»«, Reprint . 

 Report. . . 1SH2. Rci)t. Sec. C. S. Navy. 1892: 133-40. J/st*. Reiuint. 



Uranus. 



IloLDEN (E. S.) and others. [Observations, 1889-91.] il. Pub. .Vstron. Soc. 



Pacific, 3: 283. 1891. 

 Variable Stars. 



1)EBall(L.) Vcranderlichen stern iU) -j- 1 ,4:>5!l ini Stcrubilde A(|uarius. 



Astron. Nachr., 130: 367. 1892. 

 Chandler (S. C.). Contributions to the knowledge of the iuctiualitics in the 



periods of the variable stars. Astron. .Jour., 11: 14,113, 1891; 11: 121 ,1892. 



. Period of U Orionis. Astron. , lour., 10: 133. 1891. 



DfXER (N. C.) Hauptnrsache dcr Anonnilien im Lichtwechsel vou Y Cygni. 



Astron. Nachr.. 129: 313-22. 1892. 

 . Chief cause of the anomalies in the light \ ariatious of Y Cygni. Astron. 



Jour., 12: 1,13. 1892. 

 Gore (J. E.) Period of U Orionis. Astron. Jour., 10: 174. 1891. 

 ■■^ — . Probable distance of Algol. J. Brit, Astron. Assn., 2: 443. 1892, 



