6J8 philosophical transactions. [anno 1733. 



from traversing, which makes the course very difficult to direct; this happens 

 generally in entering Hudson's straits and bay, but never so without being near 

 or among ice. He has inquired of the commanders, and others that use Green- 

 land and Davis's straits, and finds great complaints from them of their compasses 

 not traversing. He has tried the needle of the azimuth compass without the 

 chart, and finds it to traverse much better; so that he designed next voyage to 

 have isinglass charts, as being lighter. 



An Ol-servatioit of a Total Eclipse of the Sun, at Goltenburg in Sweden, in Lat. 

 57° 40' 54", May 2, 1733, O.S. By M. Birger Fassen, Mathematical Lec- 

 turer there. N" 429, p. 134. 



The beginning of the eclipse, which could not be observed for clouds, seems 

 to have before &^ 26™ afternoon. 



At 6" 49™ b1\ . About 6 digits were eclipsed. 

 . The planet Jupiter appeared. 

 . The entire disk of the sun begins to be covered. 

 . A very great darkness ; and many stars appeared. 

 , The sun began to emerge very bright. 

 . Six digits had emerged. 

 , The end of the eclipse. 



Proposals for the Improvement of the History of Russia, by publishing, from 

 time to time, separate Pieces to serve for a Collection of all sorts of Memoirs 

 relating to the Tramactions and State of that Nation. Printed at St. Peters- 

 Imrg, for the Imperial Academy of Sciences. By Ger. Fred. Muller, Prof. 

 Hist. Petropol. and F. R. S. Translated from the German by M. Zolman. 

 N"429, p. 130. 



An Account of an Experiment contrived by G. J. Gravesnnde, Prof. Math, at 

 Leyden, F. R S. relating to the Force of moving Bodies, shown to the Royal 

 Society. By J. T. Desagiiliers, LL.D. and F. R. S. N° 429, p. 143. 



Dr. D. having last year shown several persons in Holland the experiment 

 contrived by Mr. Geo. Graham, to explain the doctrine relating to the mo- 

 mentum of bodies, viz. that the momentum or quantity of motion in bodies, 

 is always as the mass multiplied into the velocity; which experiment is made 

 with a flat, pendulous body, that receives the addition of a weight equal to 

 itself at the lower part of its vibration, and by the reception of that equal 

 quantity of matter always loses half its velocity. Dr. Muschenbroek, professor 



