, " [ 1001 ] 
riousGhangesof theBarofcope obferved by an Univerfal 
meafure agreed upon ; the changes of feald and open 
Thermometers.of Hygrofcopes, &c. And the Latitudes 
and Longitudes of the places. I doubt not but there may 
be feveral Inquifitive Perfons engaged in making fuch re- 
marks s and if it were thought fit to employ the excel- 
lent Correipondence which has been eftablifhed through- 
out the Learned World in publifhing fuch joy nt obferva- 
tions, as they do many ufefull things in other parts of the 
Hiftory of Nature, we might poffibly arrive at a more 
deterrninate and ufefull knowledge of the nature and 
caufes of Vapours, Wind, Rain, &c. and the various 
alterations of the weather, and find out this Proteus in all 
its changes. 
C c z A DifcQU/rf^ 
