To the Reader; 
they may there exiji and of e- 
rate under the forme of Sf frits 
or Steams. 
was 
willing not 
only to (hew 
to the Publiflier feveral Obfervatipns and Colledions of 
his in the forme of Difeourfe^^ but alfo to put them into 
his hands to perufe the fame. 
Befides this, we cannot but take nQ" 
tice here of what was intimated a good 
while ago in Numh.’^'i.oi thePhil.Tranf- 
0ions^ p.^zS. w^.That yix.Robert Hook 
had at that time ready fome Difeourfes 
upon this very Argument, which,by rea- 
fon of the many avocations he hath met 
with in the rebuilding of the City of 
London^ and his attendance on the i?. So. 
ciety, he hath not yet been able quite to’ 
finifh for the Prefs. 
Now this being fo, that feveral judiciom 
Perfons do employ themfelves in the inquiry 
af er the obfervahks in the greater Parts of 
the Worlds there is no quefion but many 
remarkable things will be deteHed therein 5 
and^ (to Jfeak more generally on this occafi- 
on^) (ince ’tis apparent, that the Ingenious: 
apJ.Diligent almofi every where are entrin^ 
more and more into Philofophical Leagues, 
44 ■ 
