Mr. Willughby 7 s Qbfervations. f r 



A Ring may be ftretched to any Bignefs, by driv- 

 ing a Cone, or the Segment of a Cone, into it, 

 Fifoes are made biggeft before, that they may always 

 move eafieft forwards 5 it having been found out by 

 Sir William Petty ^ that a Triangular Piece of Wood 

 ABC will always move in Wa- 

 ter with the great End A C for 

 wards, tho* it receive the Im 

 pulfe upon the Sides AB CB. 



Mr. Ray to Dr. Lifter. 



D. Mart mo Lifter Jo. Raius 9 $. D. 



Amice cbarijffime y 



CAtalogum meum plantarum Anglic ad te tandem 

 mitt0 5 mole quidem non ita magnum, at pre- 

 tio minorem. Nefcio an aliis placiturus fit, mihi 

 certe minime placet : nec enim in iis que fcribo mi- 

 himet ipfi unquam fatisfacio : in hoc ego afFe&um 

 erga me tuum agnofco, at judicium defiderare cogor* 

 quod autor mihi fueris ut eum emitterem. Prseter 

 ilk que ad calcem libelli emendata invenies, alia inter 

 kgendum errata ohfervavi, operariorum incuria ad- 

 mifla, quorum graviora, in exemplari quod mifi, cala- 

 mo emendavi; leviora illis ignofcas, tibiq* ipfi emen- 

 des rogo. Valeriana Grtecte locus quern inferendum 

 Bibliopole mandavi, Typographi negligentia nefcio 

 quomodo -omiflus eft,, magno meo dolore. De fcri- 

 ptoribus Botanicis antiquis & recentioribus que fen- 

 tiam in medium proferre, deq> eorum fcriptis cenfuram 

 exercere, non fum aiafus, ne crabrones irritem. Cum 

 enim aliquid neceflarib dicendum foret de nonnullis 

 qui adhuc in vivis funt, cfimqj" librum fi malus cft-nc- 

 queam laudare & pofcere, eorumq> diatribas & rhap- 



fodias 



