VOL. I.] PHILOSOPHICAL TRANSACTIONS. 143 



monstrated it impossible that this star should move in a circle, or in an ellipsis; 

 and proved it improbable that it should move in a straight line; he concludes, 

 that there can be no other genuine, or at least no other more probable cause of 

 its emersion and occultation than this, that the larger part of that round body 

 is obscure and inconspicuous to us, and its lesser part lucid, the whole body 

 turning about its own centre and one axe, whereby for one determinate space 

 of time it exhibits its lucid part to the earth, for another, subducts it : it not 

 being likely that fires should be kindled in the body of that star, and that the 

 matter thereof should at certain times take fire and shine, at other times be ex- 

 tinguished on the consumption of that matter. 



As to the other star, in the girdle of Andromeda, seen about the beginning 

 of 1665 ; he relates, that when in the end of l664 the world beheld the then 

 appearing comet, astronomers observed also this new phenomenon, which was 

 called by them Nebulosa in Cingulo Andromedae. Concerning which he notes, 

 that the same had been already seen many years before by Simon Marius, viz. 

 An. 1612, when with a telescope he searched for the satellites of Jupiter, and 

 observed their motions. He farther shows that it has formerly appeared, about 

 150 years ago, and been taken notice of by an expert, though anonymous 

 astronomer ; whose w^ords he cites out of a manuscript, brought out of Hol- 

 land by the excellent Jacobus Augustus Thuanus, returning from his embassy 

 to Paris ; wherein also was marked the figure of that phenomenon. From all 

 this he collects, that whereas this star has been seen formerly, and that 1 50 

 years since, but yet neither observed by Hipparchus, nor any other of the 

 ancients that we can find ; nor also in the former age by Tycho Brahe, nor in 

 our age by Bayerus ; and appeared also in the month of November last much 

 lessened and obscure, after it had two years ago shone very bright; that there- 

 fore it must needs appear and disappear by turns, like those in the necks of the 

 Whale and Swan. 



II. Entriens sur les Vies et sur les Ouvrages des plus excellens Peintres, 

 Anciens et Modernes, par M. Felibien. 



Trials proposed hy Mr. Boyle to Dr. Lower for the Improveme)it of 

 transfusing Blood out of one live Animal into another. N° 22, p. 385. 



1. Whether by this way of transfusing blood, the disposition of individual 

 animals of the same kind may not be much altered ? As whether a fierce dog, 

 by being often quite new stocked with the blood of a cowardly dog, may not be- 

 come more tame, et vice versa P 



2. Whether immediately upon unbinding a dog, replenished with adventiti- 

 ous blood, he will know and fawn upon his master, and do the like customary 



