PREFACE. 
I N my notes on thofe treatifes feledted out of 
the Amasnitates Academics, which, i publifh- 
ed not long ago, i marked the day of the 
month on which certain trees leafed in the year 
1755; and likewife mentioned fome co-incidences 
of the coming of birds, and the flowering of 
plants in this and other countries. The inftances 
1 there gave were but few, as i could then find 
no more parallel obfervations made .in other 
countries to compare mine with. Since that 
time another volume of the Amasn. Academ. is 
come out, in which is a fmall treatife entitled, 
the Calendar of Flora. This treatife contains an 
account of the leafing, flowering, &c. of a great 
number of plants, as alfo of the departure and 
return of birds. As thefe obfervations happen 
to be made the very fame year in which mine 
were, and as they are the firft of the kind per- 
haps that ever were made, i was induced to look 
over my papers again, which i had thrown by as 
of no coniequence ; thinking that in thefe cir-n 
cumftances fome ufe ought to be made of them, 
as they might prove entertaining at leaft, if not 
inltru£tive to thofe whofe genius leads them to 
curiofities of this kind. I am very fenfible how 
fmall the number of fuch perfons is, but i am 
contented to write for thole few, nay, indeed i 
write becaufe they are fo few, being willing as 
far as lies in my power to increafe their number. 
But it may be afked perhaps by fome, even 
after they have confidered all that is faid on this 
fubjedt in the introduction to the following Swe- 
diili Calendar, and in the piece Be Vernatione 
Arbo- 
