• C'pO 
geft, that the beft Expedient would be , to find out a Wood 
Saving that quality. But certainly there being now no Tim- 
ber, fit for Ships, that is not known, his not likely that any wilt 
be found either more hard, or more bitter, than that, which 
has been hitherto employed. Some do imagine 3 that the 
Propofer will , by certain Lixiviums , give to the ordinary 
Wood fuch a quality and bitternefs, as is found in the already 
mention'd Indian Pear- tree. But this alfo will hardly iucceed, 
fince it will be requifite not only to make Lixiviums 3 in great 
quantities at an eafierate 3 and ftrong enough to penetrate 
the thick fides of a Ship , but alfo to make them durable e- 
nough, not to be wafii’t out by the Sea. Yet notwithstan- 
ding, in thefe matters one ought to fufpend on 3 s judgement, 
untill experience do (hew. what is to be believed of them. 
So far the Extrall. To which it may perhaps not be unfeafo- 
nable to add, that a very worthy perfon in London , fuggefts the 
Pitch , drawn out of Sea coles , for a good Remedy to fcare 
away thefe noyfome infects. < 
An Account 
OfaBoo\, very lately publifh% entituled? The Origine 
of Forms and Qualities 5 illuftrated by Confidera - 
tlons and Experiments 5 by the Honour able Robert: 
Boyle. 
This Curious and Excellent Piece, is' a kind of IntroduRkn 
to the Principles of the Mechanical Philo fophy^ explicating , by 
very Confiderable Observations and Experimen ts, what may 
be, according to fuch Principles , conceived of the Nature 
and Origine of Qualities and Forms ; the knowledge whereof, 
either makes or fuppofes the Fundamental and Useful part of 
Natural Philo fophy. In doing of which, the Author ? to have 
his way the clearer, writes rather for the Corpufeularian Phi - 
lofophers (as he is pleafed to call them) in General^ ' .thin any * 
