178 EECOKD OF SCIENCE FOR 1887 AND 1888. 



Litchfield. — Dr. Peters is still at work upon Lis ecliptic charts; he 

 expects to issue shortly a secoud iustalluieut of twenty. 



Liverpool. — The time-gun has been fired with regularity, chronome- 

 ters tested, and meteorological observations conducted as heretofore. 



Lund. — Dr. Dun6r has continued his observations of variable stars 

 and spectra of red stars, and with a large solar S[)ectroscope, provided 

 with one of Ilowland's gratings, he has made an imj)ortant investigation 

 of the period of rotation of the sun. Photographs of the solar spectrum 

 were made as a check upon the micrometer measures. 



Lyme Regis. — See Rousdon. 



McGormiclc. — The 2G inch equatorial is still devoted chiefly to tlie 

 study of nebulcB. Mr. Leavenworth resigned as assistant in Septembei-, 

 1887, to take charge of the Haverford College observatory. Professor 

 Stone exi)resses continued satisfaction with the electric illumination of 

 the equatorial. 



Madras. — Mr. Norman li. Pogvsou has published in two volumes the 

 results of a series of observations of star places made with the 5^-incli 

 meridian circle, the first volume giving, after a brief history and descrip- 

 tion of the observatory, the "separate results" and annual catalogues 

 for 1802, 1863, and 1804, and the second volume "separate results" and 

 annual catalogues for 1805, 1866, and 1867. 



Mauritius. — Principal activity is in the observation of meteorological 

 and magnetic phenomena, and in the photographic record of the state 

 of the solar surfiice by means of the photoheliograi)h. 



Mazatlan (tSinaloa). — Founded in 1879 and intended principally for 

 the time service, and is supported by the department of public works. 

 Its directors have been: Ingo. Piacro Quijauo, 1879-84; L. Gutierrez, 

 1884; P. Weidner, 1884; C. Camina, 1885-'87; L. Acosta, 1887. Instru- 

 ments: Meridian instrument, by Pauth & Co., aperture 0'".076 (3 inches), 

 focal length 0'". 787 (31 inches); equatorial, by W. Gregg, New Yorky 

 0'".15 (6 iiiches), aperture; Tronghton & Simms altazimuth, and Negus 

 chroiiouieter. Latitude, +23o IP 22".81 ; longitude, 7'^ o™ 35^07 west of 

 Greenwich. 



Melbourne. — The mirrors of the 4 foot Cassegrainian reflector have- 

 become so tarnished as to interfere materially with the observation of 

 the fainter iiebuhe. The sum of $5,000 has been approjjriated to enable 

 the observatory to take part in the stellar photographic scheme of the 

 Paris conference. 



Mexico. — The Central Astronomical Observatory in the city of Mex- 

 ico was founded in 1878. It is intended for purposes of instruction, 

 and especially for cooperating in geodetic work and for maintaining 

 the time-service of the capital. The principal instruments are a 

 meridian telescope, by Tronghton & Simms, of 0'".069 aperture and 

 1'".16 focus; a zenith telescope, by the same makers, of 0'". 076 aperture 

 V^.22 focus ; an altazimuth, by the same, with 0'".305 (12-inch) circles ; a 

 small Buron refractor. Pauth chronograph, sidereal clock by Vasquez^ 



