tiijlory of j4JIrt>mvjy for the Year l8oi. 10^ 



fured, gave reafon to fufpeoi fome error in that of Lapland 

 meafiircd in 1736. INI. Mclandcrhielm, therefore, h;is ob- 

 tained perminion from the king of Sweden to nnclorUike a 

 new meafurcment. In the month of April ISieiTrs. Ofvcrbom 

 and Swamberg fet out for Tornea, where they erected lignals 

 and built fmall ohfervatories. When the ice on the river is 

 thawed, thev will meafure a bafe with the rules fent them 

 by the Inftitute. A multiplying circle, made at Paris by 

 Lenoir, will ferve them in the fpring for meafuring tire 

 angles; and next fummer v,e (liall have the fokition of this 

 old dirticulty. 



M. de JSJendoza, aSpanidi ofHcer, has publifticd two larg-e 

 collet'^ions of tables; one at Madrid, in 1800, entitled Cot- 

 Ifcclon (le Tabids ', and another at London, in the month ol 

 April 1801, which contains tables for the reduction of di- 

 ilances bv the addition of live natural numbers: he has made 

 a new ufe of the verfed fines, which renders numerical opera- 

 tions fliorter and eafier. Thefc tables confilt of 407 pages 

 quarto. 



M. Garrard has puhiiflicd tables in thirteen pages only ; 

 but his method is neither fliorter nor fo accurate. 



Mr. Vince, an able Knglifh adronrimer, ha? publiflicd the 

 fecond volume of a laree ireatife on aftrotiomv. 



The (Icreotvpe tabk^s of loearithms, publidied by Firniin 

 Didot in T795, '^'ivc been again corrected. M. Vega, who 

 has caufed to be printed in Germany the largeft eolle<9:iou 

 extant, has verified the French tables, and fent us feveral 

 faults, which arc going to be corrected : in all probability 

 they will be the la(t, and we mav depend in future on torrett 

 tables. This is a great beneilt for calculators, who have 

 fometimes loft whole davs in revifing calculations, which 

 did not agree, in confequciK-e of an erronwHis figure. 



lint as the fmall manual tables arc moll frequently em- 

 ployed, I have cauled them to be printed iu ftercotypc : fe- 

 veral porlons have corrcrted them ; and in three months I 

 can give all calculators the moft torrcct, molt cx«-ivenicnt, 

 and m(j(l cleirant edition thai has ever appvared. 



C. Vcrnifiuet has tiniOied the engraving of his large jilan 

 of Paris in 72 flieets on a fcale of lialf a line to the toifc, 

 vhich in correclnels furpallls every thing of tlic kind. 



A project was lon<i: ago formed aud undertaken for making 

 a lunar globe rcprtfentino; all the niounlains and craters. 

 Mr. Hulf. I has acenmp'iilied this objecl in England: his 

 Junar globe, mounted on an ingenious Hand, cx)>a'ics all 

 the circiinidances of the moon's lil)ration, and Ihowathat 

 body as (he oueht to :ippear it) the dilferent poIiutiiiS ot tiic 



taruh 



