C 3*4 ] 
he made me a prefent. I had furnifhed him with a 
quantity of memoirs, as I had likewife done to others, 
both feculars, and thofe of our own fociety. I digefted 
into order all that I had collected; and, in 1749, 
fent a complete treatife on the Chinefe chronology, by 
two different ways, into France. I directed it to M, 
Freret, and to the Fathers of our fociety at Paris. It 
was in three parts. I defired them to communicate 
it to you, and to Monf. de Mairan. I have had no 
account of the arrival of that treatife, in which I had 
labour’d for above two-and-twenty years paft. It 
feem’d to me neceffary, on account of the great num- 
ber of pieces, either printed or manufcript, which 
were fent hither on that fubjeCt. If I find, that my 
treatife is loft, I can eafily digeft it into order again, 
from the rough draught, which I have by me. 
Befides many aftronomical obfervations, which I 
have punctually fent you, I have transmitted to you 
the treatife of Father Duchamp upon the Indian aftro- 
nomy, a collection of antient approximations and oc- 
cultations of the ftars and planets, both by each other, 
and by the moon, and with the moon ; which I had 
collected and made for determining the longitude and 
latitude of Peking, &c. This year I have fent to 
Paris, by two different ways, a memoir, which had 
been defired of me, concerning the ifles of Lequoyo , 
or Licoukicou , which Kempfer calls Roukou. I have 
directed, that this memoir fhould be communicated 
to you. It is a pretty long one. I had an opportu- 
nity of being well informed about thefe ifles 5 but 
there are many things yet wanting to be known. To 
this memoir I have added fome remarks concerning 
the longitude of Natngazaki , and other places on the 
foutjii 
