ON TERRESTRIAL MAGNETISM AND METEOROLOGY. 39 



The private observatory established at Mukerston in Scotland, by the mu- 

 nificence of Lieut.-General Sir Thomas Macdougal Brisbane, has been com- 

 pleted in instruments, and has commenced observation. In addition to the 

 terms, a portion of the usual daily routine of magnetical and meteorological 

 observations will be kept up at this observatory. 



Of the foreign European observatories, Brussels (M. Quetelet), Prague 

 (Herr Kreil), and Milan (Sig. Carlini), have regularly forwarded the term- 

 observations for each month to the Royal Society. The Cadiz observatory 

 has been completed in instruments, and its director, M. Montojo, has person- 

 ally visited Dublin, to receive Prof. Lloyd's instructions in the process of ob- 

 sei-vation. In consequence of an application made to the Belgian Govern- 

 ment by the Royal Society, through Lord Palmerston, the establishment of the 

 Brussels observatory has been provided with the assistance necessary to carry 

 out the complete system of observation recommended by the Royal Society. 



From Breslau a letter has been received from M. Boguslawski, dated 

 July 3, giving an account of the progress of that establishment, the instru- 

 ments for which, it will be recollected, were supplied by this Association. 

 Annexed to this letter are the projected term-observations for August and 

 November 1840. It will be necessary to provide expressly for the final dis- 

 posal of the returns which will arrive from this quarter. 



The Council of the Royal Society had devoted a sum of money from their 

 Wollaston Donation Fund for the purchase of a set of instruments for the 

 magnetic observatory, the erection of which at Alton, near Hammerfest, was, 

 at the date of the last Report of this Committee, under consideration by the 

 Norwegian Government. Some difficulties have presented themselves since, 

 which will probably prevent, or materially modify, the accomplishment of 

 this object, or substitute for observations at Hammerfest a series to be made 

 at Christiania, under the direction of M. Hansteen. Be this as it may, this 

 liberality on the part of the Royal Society was highly opportune, inasmuch 

 as it left disposable the grant placed at the disposal of your Committee at the 

 last meeting. 



Under the head of " Observatories entirely new," your Committee have to 

 announce the projected establishment of a private one at Havaiiah, by Drs. 

 Belot and Jorg, which from the geographical position of the station will be 

 extremely valuable. 



The term-days of May and August 1840 have been both remarkable for 

 the magnitude of the disturbances. Mr. Riddell has undertaken to have all 

 the observations of these two days projected in curves, which will probably 

 be completed and laid before the Association at this meeting. 



By a letter received from M. KupfFer, dated 25th March 1841, it appears 

 thatthe observations in the magnetic observatory at St. Petersburgh com- 

 menced on the 1st of January, and at Caterinenbourg on the 10th of March. 

 In the course of the summer they will be commenced at Helsingfors ; and at 

 Tiflis, in all probability, during the autumn. The total number of magnetical 

 observatories which may at present be reckoned on as brought, or about to 

 be brought, into effective co-operation, is fifty-one. 



On the 12th of November 1840, the Erehis and Terror left Hobart Town 

 for their first summer's research in the Antarctic Circle, leaving Lieut. Kay, 

 with Messrs. Dayman and Scott as his assistants, in charge of the ob- 

 servatory at Ross Bank. During the temporary sojourns of the expedition 

 on land or ice, the observations will be made on the same enlarged plan as at 

 Hobart Town. Their first term will, in all probability, have been observed 

 in November at the Auckland Islands. The first point to be determined 

 would be, the point of maximum intensity in the southern hemisphere, the 



