VOL. XIV.] PHILOSOPHICAL TRANSACTIONS. 6Q 



obliquity of the moon's orbit to the equinoctial ; for when the ascending node 

 is in TjSS it was anno 167 1, and will be anno l6gO,the moon in 25 and VJ deviates 

 from the equator full 28-^-°, and but 18-^^° when the same node is in :^, as it was 

 anno 168O. 



ji Lunar Eclipse, June )7, in the Morning, l684, observed at Greenwich. By 

 Mr. Flamsteed, Math. Reg. N° 162, p. 689. 



The eclipse began at 2 h. 3m. in the morning, correct time. At 2h. 264^ m. 

 the chord of the darkened periphery was ll' 25*. The eclipse ended about 

 2h. 41m. 



An Eclipse of the Sun, July 2, l684, observed at Greenwich. By Mr. Flam- 

 steed. N° 162, p. 69]. 



At 2h. 3m. 43s. afternoon, corrected time, the eclipse was not begun, the 

 sun's limb being perfect; after that cloudy. At 2h. I2m. 17 s. the eclipse had 

 just begun on the lower limb. At 3h. Om. 20s. the shadow touched the 

 centre. The obscuration increased till 3h. 20m. from which, till 3h. 25 m. 

 the part of the diameter eclipsed was 19-i^ parts out of 32. After which, it 

 gradually decreased again ; and at 3h. 45 m. 35 s. the digits eclipsed were only 

 16, or the centre emerged from the shadow. At 4h. 27m. 37s. exactly the 

 eclipse ended, the whole time of the duration being 2h. IS-^m. 



The same Eclipse of the Sun observed at Paris. By MM. Bulliald and Cassini. 



N° 162, p. 693. 



At 2h. 25m. 30s. the eclipse began. At 3h. 10m. 5s. the centre was 

 immerged, or 6 digits eclipsed, out of 12. At 3h. 35m. the greatest obscu- 

 ration was 74- digits. At 4h. 4m. 10s. the centre emerged. And at 4h. 43m. 

 23 s. the eclipse ended. 



j4 Discourse concerning Digestion. By Mr. Charles Leigh, of Brasen-Nose 

 College, Oxford. N° 162, p. 694. 



It has been observed by Helmont, Meibonius, Tachenius, and Mr. Boyle, that 

 meats, by being kept in an acid liquor, would look extremely white. But I do 

 not find that by the help of a salt, that is merely an acid, there can be any 

 chyle prepared from meats. Wedelius is of opinion that chyle is nothing but 

 a mixture of oil and serum. Tilingius affirms, that it is made by a nitrous 

 salt. Dr. Harvey by trituration. Dr. Willis by an acid and sulphur. Diemer- 

 broeck and Sylvius by the saliva. Dr. Mayow by a nitro-acrial principle. Galen 

 and Aristotle by heat. Others by a ferment spewed from the glands in the 



