182 RECORD OF SCIENCE FOR 1887 AND 1888. 



stars. In 1887 lie changed liis resuleiice, and made considerable im- 

 provements ill liis observatoiy. Tlie iiistruintuits are a (5 inch refractor, 

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

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

 +o()o 4' 21"; longitude, 0'' 57'" 48>^ east of Greenwich. 



Piiehla {Mavieo). — Observatory of the College of the Sacred Heart. 

 Director, P. Capelleli, S. J. 



PuUcowa. — 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-incli on similar work, and also for 

 experiments in stellar photography. The astro-physical laboratory is 

 n^ported in working order. Volume 12, a catalogue of the principal stars 

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

 aiul 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 

 l)y Dr. Hermann Struve on the outer satellites of Saturn. 



RadcUffe. — 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. 



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

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

 district. 



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

 atory, named the Daniel Scholl Observ^atory, 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, 18S7, consists of an 11- inch 

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

 nometer, chronograph, and meteorological apparatus. The equatorial 

 has a set of jiositive and negative eye pieces, with reversion prisms for 

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

 eyepiece, together with a micrometer and complete illuminating appa- 

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



Smith College {ISForthampton). — An exchang.^ of longitude signals with 

 the Harvard Observatory was made in the summer of 1888. 



Stockholm. — Dr. Gryld6u has devoted himself to inv^estigations in ce- 

 lestial mechanics. 



Stonyhurst College. — The solar observations consist of (1) a drawing 

 of the sun's disk, 10^ inches in diameter, including the careful delinea- 

 tion of all spots and facuhe visible; (2) a spectroscopic measurement 

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



