The Lunar Eratosthenes and Gojpemicus. 273 



movement as a vicarious circulatory function in animals having 

 no true circulatory system." " The circulation of Annelids is 

 carefully described by Quatrefages, rendering full justice to the 

 labours of Milne Edwards. It is to be regretted he has not 

 shown the same favour to Eudolph Wagner, and Rathke. The 

 distinction which he has established between arterial and ven- 

 ous currents appears to me very just in its leading features. 

 Other authors have had similar opinions — witness the name 

 nervarteria, given by Delia Chiaje to the ventral vessel, that is, 

 to the aorta, in the sense of M. Quaterfages. The existence of 

 blood corpuscles in the vessels of certain Annelids is now indis- 

 putable. M. Quatrefages admits three examples — the Glyce- 

 rians, Phoronis, and Sylliclians. In fact, among the first, the 

 red corpuscles belong to the perivisceral cavity, and Phoronis 

 scarcely preserves its place among the Annelids. But without 

 speaking of the old observations of Rud. Wagner on a Tere- 

 bella, confirmed by Kolliker, other examples might be cited. 

 In this memoir blood corpuscles properly so called will be 

 described in the Ophelians, Cirratuliaus, and Stauroceplialians. 



(To he continued.) 



THE LUNAR EEATOSTHENES AND COPERNICUS.— 

 JUPITER'S SATELLITES.— OCCULTATIONS. 



BY THE EEV. T. W. WEBB, A.M., F.E.A.S. 



Beeoee quitting the neighbourhood of the " rampart-work" of 

 Gruitkuisen, we shall briefly advert to the region lying W. of 

 it. Here we shall find a deep crater Bode (28), nearly 9|m. in 

 diameter, whose wall of 8° of luminosity makes it a conspicu- 

 ous object. A smaller crater, Bode A, lying at a little distance 

 N.W., is equally reflective. Close to Bode on the S. is an 

 irregular ring, called Pallas, and at some distance W., and in 

 the First Quadrant, another, Ukert, which the extreme influence 

 of S.W. parallelism in its neighbourhood has squeezed almost 

 into a square form, and rendered its aspect quite different at 

 the first glance from that of Bode. At the foot of its wall on 

 the S.E. is a straight ravine, wider than the generality of clefts, 

 running in a S.W. direction. This I have seen interrupted in 

 the middle by a broad, shallow valley, so as to make it appear 

 like a cutting through the wide bank on either side. 



The Sinus JEstuum (our H), as limited byB. and M. (who, 

 unlike Lohrmann, have excluded from, it the hilly region around 

 Schrdter) is a depressed, but considerably reflective surface, 

 unique in its way, according to them, from the absence of the 



VOL. XII. — NO. IV. T 



