[ 28o ] 



doflrine is here illuftrated and confirmed by nu- 

 merous examples ; and the young and inexperi- 

 enced botanift is guarded againft the delufion, 

 frequently occafioned by the operation of thefe 

 caufes \ which are very extenfive in the vegetable 

 creation, 



67. Calendarium Flor^. a. M. Berger. 1756. 



The Calendar of Flora is intended to exhibit the 

 progrefs of the feafons, as they are man if .(led by 

 the times of the flowering of vegetables ; which 

 in each fpecies appears to be determined from 

 fome fixed law of nature ; and from the due ob- 

 fervance of which, after a fufficient courfe of ex- 

 periments had been made, the author thinks, that 

 the fowing of grain, and many other branches of 

 rural economy, dependent on the feafons, might, 

 in every country, be better regulated, than by the 

 rules in common ule. The tables in this traft 

 were formed from obfervations made on the com- 

 mon plants of Sweden^ in the Upfal garden, in 

 1755. This affair is alfo connected with the re- 

 turn and departure of migrating birds, and fur»- 

 niflies many curious and ufeful hints ; but we do 

 not enlarge, as this thefts was tranflated, and pub- 

 iiilied v/ith an Englijh Calendar of Flora-^ by the 

 late Mr. Stillingfieet^ to which we refer our readers 

 for more ample fatisfadiion. See alio the^ Vernatio 

 Jrborum, W 46. of this coUedion, a paper ftridUy 

 connefted with the Calendar of Flora, 



68. Fi,0R4 



