806 French National Inflitute. 
culties, prevented the commencement of the real stead 
ment till the 19th of Thermidor. It was however ‘finifhed 
on ‘the firft complementary day. The’ weather ‘was, ‘at 
times, fo tempeftudus, that it rendered the obfervations 
miore'tedious. One-day, in particular, it blowed with fuch 
violence that it difpleced the rules and carried them away, 
tocether with their fupporters, notwithftanding their weight 
a confiderable frition. The obfervers continued to 
firugele againft this obftacle, but at length were obliged to 
yield, andeven to begin again during calmer weather: the 
labours of that day, which amounted to 240 metres. At 
length the labour being repeated, with every poffible care, 
aS under the moft i Rieendble circumftances, the. firft 
meafurement was found to be correét within a millimetre 
ef 240 metres. This aftonifhing conformity may ferve to 
give an idea of the precifion which may be hoped for from 
rules, when employed under favourable circumftances. | At 
the moment when C. Delambre wrote thefe refults, he was 
preparing to return to Paris with Cit. Mechain. Nothing 
therefore remains but fome calculations to be made for de- 
termining the length of a degree of the meridian, in. the 
prefence of the Sed men deputed by different powers 
of Europe to affift in this grand operation. 
MORAL AND POLITICAL SCIENCES. 
Cit. Buache has publithed a general map of Guiana; 
C. Mentelle, an analyfis of his leffons of geography, and 
cofmography, with an eflay on the hiffory of the Hebrews 
C. Koch, affociate, a work entitled San&io pragmaiiea Ger- 
manorum illufirata; and C. Anquetil, an. expofition, of the 
motives of the wars and treaties of France, from the yee 
1648 to 1783. 
Cit. Bouchaud read hiftorical and critical maa ieah 
refpecting. the law Julia mifcella. This law, the object of, 
which was to favour marriage, allowed widows to enter 4 
fecand time into that flate, without leGing ceftain advantages 
attached, 
