226 Scientific Intelligence. [Sep*. 



The reading of a memoir, by M. Risso, entitled " A Geolo- 

 gical Survey of the Environs of Nice," was begun. 



May 18. — M. Laplace read a memoir on the Rotation of the 

 Earth. 



M. Arago made a report on a new work on Descriptive Geo- 

 metry, by M. Vallee, Civil Engineer. 



M. Girard made a report on the memoir of M. le Gallois on 

 the Iron Railways of England. 



In many parts of Germany it has been long the practice to fix 

 wooden beams on the floor of galleries in mines, in order to ease 

 the draft of the trucks and other carriages used in them. Of 

 late years the English have extended this plan to carriage above 

 ground, using iron bars- instead of wood. The description of 

 these iron railways forms the subject of M. le Gallois's memoir. 

 According to him there are already in the vicinity of Newcastle 

 75 leagues of iron railway above ground, besides as much in the 

 collieries below the surface. The subject is entered into in great 

 detail by M. le Gallois, and the memoir is recommended for 

 publication. 



The reading of M. Risso's memoir on the Environs of Nice 

 was concluded, and the memoir was referred to a committee. 



M. Delambre made a report on the third volume of M. Pey- 

 rard's translation of Euclid. 



The committee find in the present volume the same fidelity of 

 translation as in the two former ones. The various readings fill 

 84 pages. The editor has asserted that the splendid Oxford 

 edition contains all the errors, even the most palpable ones, of 

 the Basle edition, besides many others which are peculiar to it ; 

 and this assertion is substantiated by a comparative view of the 

 two editions occupying eight pages. 



Article XV. 



SCIENTIFIC INTELLIGENCE, AND NOTICES OF SUBJECT* 

 CONNECTED WITH SCIENCE 



I. Lectures. 



Mr. Clarke's and Mr. Blas:den's lectures on midwiferv and the 

 diseases of women and children will commence on Monday, 

 Oct. 5. The lectures are read every morning from a quarter 

 past ten to a quarter past eleven, for the convenience of students 

 attending the hospitals. 



Mr. Guthrie, Deputy Inspector of Military Hospitals, will 

 commence his winter course of lectures on surgery, on Monday, 

 Oct. 5, at 5 minutes past 8 in the evening, in the waiting room 

 of the Roya Westminster Infirmary for Diseases of the Eye, 

 Mary-le-bone-street, Piccadilly. To be continued on Mondays, 



