$60 PHILOSOPHICAL TRANSACTIONS. [aNNO I76I. 



Qh jQin Q. Internal contact. 



8 29 3 Total egress. 

 Mr. Haydon, in a subsequent letter, says that on comparing his observations 

 with those made in London, his interval between the internal contact and total 

 egress, was considerably longer than any of the others. Therefore he examined 

 his notes again, but could not find he had made any mistake in transcribing them, 

 but thinks he may at first have set down I'" too many in the total egress. 



XXXVIII. Observations on the same Transit ; and on an Eclipse of the Moon, 

 May 8, and of the Sun, June 3, 1761. By Mr. Peter JVargeniin, F. R.S., 

 and Sec. R. Acad, of Sciences, Sweden. From the Latin, p. 208. 



Mr. W. says the lat. of Stockholm, his situation, is 59° 20' 31", and its long, 

 east of Greenwich I*' 1 2™ 1«. 



A Total Eclipse of the Moon observed May 18, 1761. 

 At 9*^ 21"" 30* A dense penumbra in the moon's margin. 

 9 32 30 Beginning of the true eclipse. 

 10 41 O Total immersion of the moon. 



12 15 Beginning of the true emersion. 



13 21 8 End of the true eclipse. 

 1 3 23 O End of the penumbra. 



A Solar Eclipse observed June, 5, 1761. 

 At 3** 0™ O* Sun rose eclipsed. 



3 12 32 The end as much as could be seen. 



The Transit of Venus over the Sun, June 6, in the Morning. 

 At 3^ 21"" 37* Some part of Venus on the sun. ^ 



3 39 23 Interior contact, or total immersion. 

 9 30 8 Beginning of emersion, or interior contact. 

 9 48 9 End of the emersion, or exterior contact. 

 The beginning of the first contact could not be taken, on account of the un- 

 dulation of the sun's border. The observations were made with a tube of 20 

 Swedish feet, of 3 inches focal distance. It was remarkable that on the exit, 

 when a part of Venus was quite emerged, it was visible faintly illuminated. But 

 whether this was owing to an inflection of the sun's rays, or to a refraction in 

 the atmosphere of Venus, he leaves to others to determine. 



XXXIX. An Account of the Observations made on the same Transit in Sweden, 

 In a Letter from Mr. Peter fVargentin. Translated from the French, p. 213. 



At Tomeo in Lapland, Messrs. Lagerbom and Reliant very happily obser\'ed 



