O F T R E E S. i5t 



only the time of the foliation of trees, but the 

 day alfo on wliich barley was fown, and cut ; 

 and were fo kind as to communicate to me their 

 obfervations '''. I acknowledge myfelf much 

 obliged to each of thefe worthy gentlemen for 

 the benevolence fhewn me on this occafion, 

 and more particularly to D. Toren, who for 

 the fpace of three years made his obfervations 

 on a tree of the fame fpecies v/ith care and di- 

 ligence ; as alfo to D. Eric Ekelund, who did 

 the fame with the like induilry for two years. 

 Some perhaps had not always time, or op- 

 portunity to make their experiments with the 

 fame attention -, for thofe, who are detained 

 in cities, often want a number of trees to ob- 

 ferve thefe things as they ought, and thofe, 

 who live in the countrey, are often drawn by 

 domeftic affairs from things of this nature. 

 But if obfervations were made according to 

 the following rules, ifr, That they fhould 

 be continued for three years^ and thofe fpe- 

 cified, as well as the f laces in every obferva- 

 tion. 2d. That they fhould be made on the 



^ The author gives in a note a lift of eighteen perfons who 

 had communicated their obfervations made in Sweden, Nor- 

 way, Finland, and Lapland, fome for one, fome for two, 

 others for three years from 1750 to 1752 both inclufive. 



L 4 fame 



