04 Notes and Memoranda. 



confined entirely to the south side of the equator, as the northern 

 part of the river is being investigated by Madame Tinne's party, 

 which includes several scientific observers, as the Baron Von 

 Heuglin. 



LONDON MICROSCOPICAL SOCIETY. 



Held at King's College, Jan. 13. 

 Charles Brooke, Esq., President, in the Chair. 



Dr. Lionel S. Beale read a very interesting paper on the white 

 blood corpuscles, after which a very animated discussion took place, 

 in which the President, Dr. Carpenter, Mr. A. Brady, Mr. Samuel- 

 son, Dr. Beale, and Mr. H. Lobb, took part. The discussion was 

 chiefly between Dr. Beale and Dr. Carpenter, and elicited consider- 

 able applause from the meeting. 



A new table for heating slides-while mounting was exhibited by 

 Mr. D. Everett Goddard, and which is certainly a great improvement 

 on those previously in use. Instead of heating the slide by placing 

 it on a flat metal, the table is so constructed that the centre of the 

 slide is heated by radiation, and the balsam in which the prepara- 

 tion is mounted does not come in direct contact with the hot metal 

 plate. 



NOTES AND MEMORANDA. 



Recently named Lunar Cbatees. — Mr. Birt, of Hartwell Observatory, has 

 communicated to the Astronomische Nachrichten the following notes on craters he 

 has recently named. — 405, 406. The Coxwell Mountains skirt the S.W. edge of 

 Palus Somnii, Mount Glaisher being the culminating point just south of Proclus. 

 •'107. Chevallier. A full-sized crater near Atlas. It is rather shallow, and has 

 some formations within. 408, 409. Moigno and Peters are two somewhat 

 similar and rather conspicuous craters when the Terminator is near them. 

 They are in the neighbourhood of Christian Mayer. 410. The Tenerilfe Moun- 

 tains are the detached rocks on the Mare Imbrium, south of Plato. They 

 are respectively designated Petora, Guajara, Pico, Rambleta, Alta Vista, and 

 Chajorra. The remarkable range between Plato and La Place is provisionally 

 called " Straight Chain." A chart of the Toneriife Mountains is in project. 411. 

 J'iazzi Smyth. A small crater near Kirch, it is between Petora and Guajara. 412 to 

 1 1 .",. Serschel II., Robinson, South, and Babbage form a fine group hitherto unre- 

 presented as they appear in our lunar maps. An account of this group will be found 

 in the "Beport of the British Association for tho Advancement of Science, for 

 1862," page 'J ; Transactions of the Sections. 416. The Percy Mountains, extending 

 from (iassendi to Cavendish, form a fine chain with crater openings. This chain 

 is interrupted by Mersenius. 417. Rosso. A fine walled plain, hitherto un- 

 represented. 418 to 421. J. Franklin, Cro/.ier, and MacClure form a bold head- 

 ]:i nil, projecting with the Mare Fecunditatis opposite tho Pyrenees. 422. 

 Wrottesley. A crater eastward of and adjoining rciavius. 423. Phillips. A 

 large crater adjoining Wilhelm Humboldt. It is lettered "Humboldt," in Beer 

 and M aider's, and also in Le Couturier's maps ; but the large crater rather west 

 is really W.Humboldt. Beer and Mikller describe it as such. 424. The Mare 

 Smythii, named Eastner by Schrbtcr, but very imperfectly represented by Beer 

 and Midler, as to require some change. The numbering is carried on from the 

 Rev. .1. \V. Webb's catalogue in his very useful work, Celestial Objects for 



