rOL. XIII.] PHILOSOPHICAL TRANSACTIONS. 6(53 



The following are also some of the principal observations made of the third 



conjunction in the month of May following, the distances taken in parts of 



May, 1683. Dist. Ty&'V- the micrometer as before. From which it is 



d* *>• "^- P*s- manifest that, as the observed distance conti- 



10 9 u::::::37^ = 28' 30" ""^"y decreased till May 18, and after that 



jj Q JO 3450 = 26 13 continually increased, the conjunction of the 



12 8 45 3050 = 23 10 planets took place on that day, and indeed, as 



13 9 15 2800 = 21 17 appears from the observations of the 15th and 



1* ^ ^^ 2^^^ = ^^ ^^ 20th days, at the hour of 10 in the morning; 



15 9 30 2400 = 18 15 , • i "^ i- . ^i i r ,. , 



g Q gQ 2250 =17 6 which, according to the compilers ot the al- 



17 9 40 2150 = i6 10 manacs, ought not to have happened till the 



18 10 2100 = 15 58 26th, being 8 days later. And the same result 



20 11 *5 2450 = 18 37 ^^s derived from many other observations con- 



22 9 20! '. .... 2900 = 22 3 ^^^^^^ "" ^^^ following days, both of the dis- 



23 g 5 3250 = 24 43 tanccs and positions of these planets with cer- 



24 10 6 3600 = 27 22 tain stars; the distances being sometimes taken 



25 9 30 4000 = 30 25 ^yrith the micrometer, and other times with the 



26 11 4453 = 33 50 ^^^^^^^^ 



27 9 25 4900 = 37 15 



28 9 56 5325 = 40 29 



Occultations of some Fixed Stars by the Moon in 1 683, observed at Dantzic by M. 

 Hevelius. Abridged and translated from the Latin, N" 151, p. 331. 



Anno l683, Feb. 11. N. S. at gh, when first the moon came in my eye, the 

 star Regulus was at some distance on the east. So that their conjunction, as 

 near as I could make by a rude estimate, took place about the rising of the 

 moon, at 5 or 6 o'clock. But whether the star had been really covered I could 

 not be quite certain. 



Anno l683, April 2, N. S. I observed 2 occultations and a conjunction of 

 certain stars by the moon, as here follows : 

 Time by the watch. 

 9^ 53"™ 30*. . . . Beginning of the occultation of the small star A. 

 10 8 30. . . . Conjunction of the moon and- the little star C, distant from 



the ([ 's lower horn 4'. 

 10 29 36 ... . Beginning of the occultation of the small star B. 



10 52 50. ...End of the occultation of the star A. 

 IX 45 30 The altitude of Lyra 31° 44' 



11 46 30 ... . The same again 31 55 

 11 47 50 ... . Repeated again 32 6 



The small star A is not in Tycho's catalogue ; but in my new one it is called 



