[ 262 3 



of barley and its harveft and at Upfal^ in 60 de-? 

 , grees, the average of fix years turned out to be 

 105 days. It is concluded, upon the whole, that 

 in Upland^ the leafing of the Birch tree Ihould di-> 

 re6l the time for fowing barley but, that diffe- 

 rent trees will beft indicate the time in different 

 places. Another curious obferyation follows from 

 this paper : that^ notwithftanding the difference 

 in the number of days between the ripening of 

 barley in Lapland and in Upland^ it will be found 

 that the greater length of days in the former coun- 

 try, gives a balance of fun equal to the greater 

 number of days in the latter. 



47. Increment/! BoTANicES. J.Biuur, 1^55, 



A concife hiflory of the rife, fate, and progrefs 

 of botanic fcience, from the firil traces of it to 

 the prefent time; divided into four periods or 

 epochs. The firft includes only the antients, by 

 whom are underftood Arlftotle^ Jheophraftus^ Diof- 

 corides^ and Fliny \ who, as compilers chiefly, did 

 little but deliver the tradition of the times j and 

 whofe plants, after the commentaries of a century, 

 canhoc be known by their defcriptions to this day, 

 fo little had they extended their ideas to fpecific 

 diflin6lions ; yet we muil venerate their writings, 

 as the only remains of this fcience tranfmitted to 

 our times. ^ The fecond period commences with 

 the reftoration of letters, after the taking of Cm- 

 Jiantinople by the I'urh^ beginning with Brunfel- 

 fius^ and ending with the Bauhines, The third, 

 which is called the period of Syflematics^ is con- 

 tinued 



