226 



Royal Society : — 



Stonyhurst College, and is now in the Observatory of that College ; 

 34 was supplied to the Government of the United States of America, 

 and is now in the possession of Dr. Alexander Dallas Bache, Superin- 

 tendent of the Coast Survey ; Nos. 35 and 36 were made for the 

 Netherlands Government, one for Utrecht, and one for Java ; the 

 "Kew Circle " was in regular use for the monthly determinations of 

 the Dip at Kew, from the commencement of those observations until 

 August 1859, when it was exchanged for No. 33, which has subse- 

 quently been, and is now, in regular employment for that purpose. 



Besides the four principal observers already noticed, a few determina- 

 tions were made, as is shown in the Tables, by Mr. Valentine Magratii, 

 Assistant in the Observatory, by Captain Haig of the Royal Artillery, 

 practising at Kew preparatory to his employment on the Boundary 

 Commission between the United States and the British possessions 

 on the West Coast of North America, and by Lieut. Goodall of the 

 Royal Engineers, who attended at Kew to practise the manipulation 

 of magnetical instruments. 



Table I. — Observations of the Magnetic Dip, at the Kew Observatory, in 

 1857 and 1858, with Circles of the English Construction, fitted with 

 Verniers and Microscopes. 



£ 



Circle. 



R3 

 u 



j 



Eg 



< 



Observer. 



d, 

 5 



E 



to 







C A 



.2 



II 



u 



111 



E > 





 



"73 r-l 



13 



l8 57 . 













/ 







O / 



Nov. 2 



27 



I 



O & 180 



Mr. Welsh. 



68 23-4 



-i-8 



-o-8 



68 20-8 



2 



27 



I 



30 „ I20 



» 



24-9 



vZ 



o-8 



22'3 



2 



27 



I 



60 „ 150 



>> 



24-5 



r8 



o-8 



21*9 



2 



27 



2 



O „ 180 



?> 



25-2 



r8 



o-8 



22-6 



2 



27 



2 



30 „ I20 



>> 



23-8 



r8 



o-8 



21*2 



2 



27 



2 



60 „ 150 



5» 



24*0 



r8 



o-8 



21-4 



2 



Kew 



2 



O „ 180 



Mr, Chambers. 



27*0 



r8 



o-8 



24-4 



2 



Kew 



2 



30 „ I20 



» 



24*0 



r8 



o-8 



21-4 



2 



Kew 



2 



60 „ 150 



>» 



24*0 



vS 



o-8 



21*6 



3 



23 



I 



O „ 180 



Mr. Welsh. 



26*3 



r8 



o-8 



23*7 



3 



23 



I 



30 ,, I20 



»> 



26-6 



i-8 



o-8 



24-0 



3 



23 



I 



60 ,, 150 



>> 



25*6 



r8 



o-8 



23-0 



3 



23 



2 



O ,, 180 



>> 



26-6 



1*8 



o-8 



24*0 



3 



23 



2 



30 „ I20 



>> 



*5'5 



i-8 



o-8 



22"9 



3 



23 



2 



60 „ 150 



»> 



25*0 



r8 



o-8 



22*4 



3 



27 



3 



O ,, 180 



Mr. Chambers. 



22*0 



r8 



o-8 



19-4 



3 



27 



3 



30 „ I20 



>> 



23*5 



i-S 



o-8 



20*9 



3 



27 



3 



60 „ 150 



„ 



*3'5 



r8 



6-8 



20*9 



4 



28 



1 



O ,, 180 



» 



22'3 



r8 



o-8 



197 



4 



28 



1 



30 „ I20 



?> 



2 5 'I 



i-8 



o-S 



22*5 



4 



28 



1 



60 „ 150 



» 



27*2 



r8 



o-8 



24*6 



5 



28 



2 



O „ 180 



>» 



28-1 



r8 



o*8 



25-5 



5 



28 



2 



30 „ 120 



»» 



25"3 



x-8 



o-8 



22*7 



5 



28 



2 



60 „ 150 



»> 



28*1 



r8 



c-8 



25"5 



7 



28 



1&4 



Mer., and at 

 right angles. 



)i 



256 



r8 



r8 



c-8 



23-0 



10 



27 



1 &4 



Mer., and at 



>> 



34* 2 



r8 



o-8 



31-6 







i right angles. 







r8 







27 



28 



1 



& 180 



>> 



24-9 



i'4 



o-8 



22*7 



27 



28 



2 



» 



St 



68 29*4 



-i*4 



-o-8 



68 27'2 



