r 446 ] 
dated at Guadalupe May 1, izyi, to be inferted, 
if it fhould be found worthy, in the Philofophical 
‘TranfaBions. 
He does this, as he perceives, that in France fome 
lovers of natural hiflory do attribute and even appro- 
priate to themfelves his labours and his difcoveries, of 
which they have had the communication ; and that 
himfelf, retired to the Weil; Indies, and not having 
the means of giving to his work the perfection he 
defired, for want of books, and yet more for want of 
judicious perfons, with whom he might not only con- 
fult, but who might alfo enable him to give a more 
full explanation to inch paffages of his work, as might 
be thought obfcure, and even correCt the faults 
thereof; for which reafon he takes the liberty to re- 
quest this good office of the Royal Society. 
This treatife is divided into two parts ; the firft of 
which relates to coral only, and is fubdivided into 
ten chapters ; to which is fubjoined a catalogue of 
the remedies and compofitions, as well chemical as 
galenical, in which coral is an ingredient. The fecond 
part is fubdivided into eight differtations, each of 
which has for its objeCt fome production of the fea ; 
and the whole tends to evince, that as well coral, as 
the other marine bodies herein fpecified, and here- 
after to be confider’d, are produced by animals, viz. 
different kinds of urtica marina & purpura. To 
thefe the author has added a complete index, refer- 
ring to every thing taken notice of in the whole 
work. 
This work is the refult of a great number of very 
curious obfervations and inquiries, and has for its ob- 
ject a part of natural hiflory not hitherto well known. 
For 
