182 RECORD OF SCIENCE FOR 1887 AND 188S. 



stars. In 1887 he cliauged liis residence, and made considerable im- 

 provements in his observatory. The instrnments are a G inch refractor, 

 which is to be replaced by ojie more powerful, and a small transit and 

 clock. The provisional co-ordinates of the meridian room are : latitude, 

 + .")(P 4' 2i"; longitude, 0'' 57"" 48^ east of Greenwich. 



Pnebla {Mexico). — Observatory of the College of the Sacred Heart. 

 Director, P. Capelleli, S. J. 



Pulkowa. — The great routine work of the observatory, the determina- 

 tions of star positions with the transit, meridian circle, and vertical cir- 

 cle has proceeded on the same lines as before. Romberg is credited 

 with having made no less than 9,000 observations with the meridian 

 circle in a single year. The 30 inch refractor has been used on close 

 double stars and satellites, the 15-inch on similar work, and also for 

 experiments in stellar photography. The astro-physical laboratory is 

 reported in working order. Volume 1 2, a catalogue of the principal stars 

 to the fourth magnitude, as far as —15° declination, has been published, 

 and several other volumes, though interrupted by the death of Wagner, 

 are well advanced. The first number of a new series of publications — 

 " Supplements to the Pulkowa Observations" — is an interesting memoir 

 by Dr. Hermann Struve on the outer satellites of Saturn. 



Radcliffe. — The transit circle has been used for observing the sun. 

 moon, and a list of stars down to the seventh magnitude between the 

 equator and —25°; the Barclay equatorial for the measurement of double 

 stars and observations of comets. The volume for 1885 has been pub- 

 lished, and all reductions are remarkably well advanced. 



Eousdon. — Systematic observation of some twenty long- period varia- 

 bles has been taken up ; time signals are furnished for the neighboring 

 district. 



Scholl Ohservatory. — At Lancaster City, Pennsylvania, a new observ- 

 atory, named the Daniel Scholl Observatory, has been erected on the 

 grounds of Franklin and Marshall College. The equipment as described 

 by Mr. J. E. Kershner in Science for May 13, 1887, consists of an 11-inch 

 Clark-Repsold equatorial, a 3-inch transit, a Seth Thomas clock, a chro- 

 nometer, chronograph, and meteorological apparatus. The equatorial 

 has a set of positive and negative eye pieces, with reversion prisnus for 

 three of the micrometer eye-pieces, a Mertz solar eyepiece, and a comet 

 eye-piece, together with a micrometer and complete illuminating appa- 

 ratus for bright and dark field, as worked out by the Repsolds. 



Smith College {J^orthampton). — An exchang', of longitude signals with 

 the Harvard Observatory was made in the summer of 1888, 



Stockholm. — Dr. Gylden has devoted himself to investigations in ce- 

 lestial mechanics. 



Stonyhurst College. — The solar observations consist of (L) a drawing 

 of the sun's disk, lOi inches in diameter, including the careful delinea- 

 tion of all spots and facuhp visible; (2) a si)ectroscopic measurement 

 with a radial slit of the heigiit of the chromosphere and of all the gas- 



