EEPORTS OF ASTKO^-OMICAL OBSERVATORIES. 731 



was given for a registering apparatus for transit observation, and for 

 three electrical clock attacbnients, to be employed in the small isolated 

 pavilion. 



In the total absence of an instrument for measurinu- /.enidi distances, 

 preliminary conununication has been lield with the "eelebiated lirm of 

 ilEPSOLD SOHNE, in Ilaniburg, for the i)rei)aration of a medium sized 

 vertical circle. Further projeiits for the equipment of the Observatory 

 have to be delayed for the present. 



The Wackerbarth reflector and the Repsold universal instruments 

 have undergone repairs, and results in tlio improvement ot the latter 

 for transit observation. The Stetniikil transit instrument is at i)resent 

 in the hands of Mr. Rose, maker to the University, for repair, having iu 

 view its application in the vertical of the Role star. 



The library ot the Observatory originated by private donations, has 

 received its principal increase in voluntary contributions by scientists 

 and institutions abroad. It consists of four distinct gr()ui)s :" the li.iOR- 

 TER and Mallet donation, the CoUectio Recentior and the Svanberg 

 collections. The catalogue shows for these four the following ligures, 

 respectively: 1150, 880, 300, and 1200, of which, however, numy, such as 

 journals, annuals, epheraerides, &c., consist of a large number of vol- 

 umes. On occasion of the emancipation of the meteorology, the works 

 relating to this branch were set apart for that institute. 1'lie increase 

 during the past year amounted to 00 contributions, of which 70 came from 

 abroad ; sixty -books were bound. 



In consequence of the circumstances referred to, little scientitie work 

 has been done during the past year. The director has contiiuunl his obser- 

 vations on nebuhie, while the assistant made time determinations. Tlie 

 director's time has been largely consumed in perfecting arrangements for 

 instruction. Very desirable text-books have been published at govern- 

 ment expense, and preparations made to facilitate astronomical instruc- 

 tion for the students, among which is the cstablislnnent of a work-room, 

 iu which opportunity is given to the students to acquaint themselves 

 between the observations with recent astronomical literature and jour- 

 nals. 



Eight students have practiced during the year, and many have at- 

 tended the astrououdcal lectures. 



Utrecht, Holland, 

 Observatorium. 



Longitude from Greenwich, 20- 31«.7 E. 

 Latitude, 52^ 5' 10".5 K. 

 Directors : J. F. Heunert, 17G7 ; 



G. Mall, 1812 ; 



R. VAN Rees, 1836 ; 



M. HoEK, 1860 ; 



J. A. 0. OUDEMANS, 1874. 



Founded in 1767. Remodeled in 1864. This Observatory possesses 

 an altazimuth. 



