112' PHILOSOPHICAL TRANSACTIONS. [aNNO \666. 



the Earl of Sandwich, as they were sent to the T^ord Viscount Brounker, are 

 these : At Madrid, the ecHpse began about five o'clock in the morning : at 5h. 

 15 m. the sun's altitude was 6° 55'. 



The middle of it was at 6h. 2m. the sun's altitude 15 deg. 5'. 



The end was exactly at 7h. 5 m. the sun's altitude 25 deg. 24'. 



The duration was 2h. 4m. 



37 Parts of the sun's diameter remained light, and 63 parts dark. 



The Paris Observations. 



The observations made at Paris by Monsieur Payen, are these : 



The eclipse began there at 5 h. 44 m. 52 sec. mane; and ended at 7 h. 43 m. 6 sec. 

 So that its whole duration was ih. 58m. 14 sec. The greatest obscuration they 

 assign to have been 7 dig. 50'; but they add, that it seemed to have been greater 

 by 3 minutes ; which M. Payen imputes to a particular motion of libration of 

 the sun's globe, which kept that luminary in the same phasis for the space of 

 8 min. and some seconds, as if it had been stopped in the midst of its course; 

 rather than to a tremulous motion of the atmosphere, as Scheiner would 

 have it. 



They conceive that the apparent diameters were almost equal ; seeing that in 

 the phasis of six digits, the circumference of the moon's disk passed through the 

 centre of that of the sun, so as that two lines drawn through the two horns of 

 the sun, made with the common semidiameter two equilateral triangles. 



Then they observe, that the beginning and the middle of this eclipse hap- 

 pened to be in the north east hemisphere, and the end in the south east. The 

 first contact of the two disks was obsei-ved in the superior limb of the sun's disk 

 in respect to the vertical line, and in the inferior in respect to the ecliptic : But 

 the middle and the end were seen in the superior limb, in respect both of the 

 vertical and the ecliptic : And, what to this author seems extraordinary, both 

 the beginning and the end of this eclipse happened to be in the oriental part of 

 the sutf s disk. Lastly, They take notice, that by their observations it appears 

 that there is but little exactness in all the astronomical tables predicting the 

 quantity, beginning and duration of this eclipse. 



Inquiries and Directions concerning Tides. By Dr. Wallis. 



N^ 17, />. 297. 



Dr. Wallis having, in his Hypothesis of Tides, intimated, that he had reason 

 to believe that the annual spring tides happen to be rather about the beginnings 

 of February and November than the two equinoxes, desires that some intelli- 



