84 September 1748, 



water, which is eight Englifh feet; it will pretty 

 plainly appear, that a very intenfe froft is required 

 to cover the Delaware with fuch thick ice. 



2. BUT it is like wife true, that though the 

 winters are fevere here, yet they are commonly 

 of no long duration j and I can juftly fay, that 

 they do not continue above two months, and 

 fometimes even lefs at Philadelphia; and it is 

 fomething very uncommon when they continue 

 for three months together, infomuch that it is 

 put into the gazettes. Nearer the pole the win- 

 ters are fomewhat longer, and in the quite nor- 

 thern parts they are as long as the Swedijh win- 

 ters. The daily meteorological obfervations which 

 I have made during my flay in America ', and 

 which are annexed to this work, will give more 

 light in this matter. 



3. THE heat in fummer is exceffive, and 

 without intermiffion. I own I have feen the ther- 

 mometer rife to nearly the fame degree at Aobo 

 in Finland. But the difference is, that when the 

 thermometer of profeffor Celfius rofe to thirty de- 

 grees above the freezing point, once in two or 

 three fummers at Aobo, the fame thermometer 

 did not only, for three months together, ftand at 

 the fame degree, but even fometimes rofe higher, 

 not only in Penfyfoania, but likewife in New 

 Tork, Albany, and a great part of Canada. Dur- 

 ing the furnmers which I fpent at Philadelphia, 

 the thermometer has, two or three times, rifen 

 to thirty-fix degrees above the freezing point. It 

 may therefore with great certainty be laid, that in 

 Penjyhania % the greateft part t April, the whole 



of 



