° 
2c8 
Martin, relative tothe prefent ftate of 
cultivation of a number of vegetables, 
which have been tranfported trom the 
alt-Ingies to Cayenne. Thefe trees, 
which have been too long confined ina 
remote part of the Indian Archipelago, 
and which thrive in any tropical climate, 
were brought away by the enlightened 
courage of the celebrated Porvre, and 
are now in fuch numbers at Cayenne, as 
to afford hopes of their fufhcing, ere 
long, for the confumption of the mother 
country. 
In a preceding voyage, Martin had 
introduced into the botanic garden there, 
the Ravengara, the Mangoujian, the Clove 
tree, the Nuimeg-tree, the Pepper-iree, and 
many other interefting plants. The 
elove-tree has been the moft fortunate in 
its growth and cultivation, there being 
now in the colony about eighteen thou- 
fand trees of that fpecies. The memoir 
notices a new method of drying the 
cloves; in which, the only expence re- 
quired, is that of hand-labour, and 
which, im a fmall fpace of time, will 
dry with fafety and economy, a confider- 
able quantity of cloves. 
What greatly contributed to accelerate 
the growth of the clove-trees, was their 
having been planted im a humid foil; 
this fiuation agreeing remarkably well 
with their firft years. 
Of the pepper-trees, the propagation 
has been, as yet, inconfiderable. This 
tree requires to be planted under the 
the'ter of another, which muft be re- 
moved, when the pepper-tree fhall have 
acquired a fufficient degree of ftrength. 
‘The number of nutmeg-irees tranf- 
planted from the Indies, 1s lefs than even 
that of the pepper-trees. : 
Of all thefe trees, the clove-tree is by 
far the moft delicate, requiring, in its 
early faves, the protettion of the thade 
of the Banana trees. 
The memoir particularizes the differ- 
ent efiablifhments relative to the culture 
Martin, the prohibition laid by the go- 
vernor om the culture of fome of them, 
and his negleét of the botanic garden, 
-c, the reafons of which conduc are not, 
however, affigned. It alfo calculates on 
a ipeedy product of 1,129,296 pounds of 
tlie cloves, the growth of the colonies. . 

WoticE OF MEMOIRS IN THE CLAss 
OF. THE MaTHEMATICsS, PRE- 
SENTED BY PRONY. 
FLAUGERGUES, an affociated mem- 
ber, refident at Vivier, tranfmitted a 
Natienal Inftitute—Clafs of the Mathematics. 
of the trees, whica have been formed by - 
[March 
memoir, in which he confiders the effeéts 
produced by the earth’s motion, on the 
phafes of the occultations of the ftars, by 
the moon. It has been obferved, that 
ftars appear to advance upon the lunar 
difc, for a period of fome feconds pre- 
vioufly to the inftant of their oceuitation ; 
a phenomenon, for which Flaugergues 
attempted laft year to account, by attri- 
buting the circumfiance to the aberra- 
tions of the ftar and of the moon. This 
folution appeared te the aftronomers and 
geometricians of the National Inftitute, 
to be rather ingenious than folid; and 
they communicated to the clafs, the refult 
of an accurate and laborious examen or 
this head; the queftion, however, is now 
decided by the memoir here- noticed, 
which Flaugergues had fent to the elafs, 
nearly at the fame time; and in which 
he obferves, that after a more attentive 
infpeétion, he was led te conclude, that 
although, by reafon of the aberration, a - 
ftar in conjunétion, appears to be more 
advanced than the moon, on the fide on 
which the earth moves ; neverthelels, by 
a particular circumftance, incident to oe- 
cultations, itis not poflible that the ftar 
fhould appear more advanced, than the 
edge. of the moon’s dife.. An explana- 
tion is given of this apparent paradox ; 
and the opinions of this aftronomer now 
coincide with thofe of his colleagues. 
Fiaugergues alfo tranimitted another 
- = ~ * = z 
memoir, which treats of a eurious obfer- 
vation of the planet Mars. On the 18th 
of April, 1796 (old ftyle) in the morn- 
ing, he difcovered the far of Sagittarius 
coming from under Mars’s difc, the up- 
per edge of which itappeared to touch. 
An important refult is contained in this 
obfervation, viz. that the place of the 
node. is one fign, 17° 58’ 6”; varying 
from the place aifigned in the tables, by 
no lefs than 2/2”. 
DELAMBRE, one of the aftronomers 
who undertook to meafure the arch of | 
the meridian included between the pa- 
rallels of Dunkirk and Barcelona (a mea- 
furemert which is to derermime the fun- 
damental unity of the new metrical fyf- 
tem) prefented the detailof his feries of 
operations, til the period when bad 
weather obliged him to poftpone his la- 
bours, and retire to Evaux. He has re- 
mained there ever fince, devoting his at- 
tention to aftronomicat refearches. It ap- 
pears from hisjournal, that he, has com- 
pleted the meafuren-ent of 2$3.000 toifes 
(a French meafure, containing fix feet 
Englifh) fince his fetting cut from Dun- 
kirk ; to avhich we are to add what 
Mr&CHAIN has done on his fide, fiance 
: his 
‘ 
+ 
