PREFACE. 247 



but inllcad of 32 i liave made o the freezincr 

 point. This method is more fimplc, natural, and 

 uniform, and conveys a more diftin6l idea to the 

 mind. To this fcalc i have reckiced the Swedifli 

 author's obfervations, as well as thole of Dr. 

 Hales, taken from liis Vegetable Statics -, who i 

 am pleafed to find has made ufe of the metliod 

 above-mentioned, in his late works, and i won- 

 der it is not univerfally adopted. The degrees 

 below o i have marked thus, — i. — 2, — 3, &c. 



6. My botanical obfervations vv^ere made on 

 plants growing in the fields chiefly ^ the Swcdifh 

 plants growing in the Uplal garden ; which me* 

 thod is beft, wliere either is in our power, i can- 

 not determine. There are conveniences and in- 

 conveniences attending each-, but there is one great 

 convenience vifibly on the fide of the garden •, 

 which is, that the plants lye within a fmall com- 

 pafs, and therefore may be looked over more fure- 

 ly and regularly every day. 



7. I once defigned to place the two Calendars 

 over-againft one another, in oppofite pages, part 

 by part, according to the days of the month, but 

 upon confideration i found, the climates being 

 fo different, that there would be great vacancies 

 in many of the pages •, at the fame time that the 

 fame plants would be in different pages, and the 

 bulk of the book would be increaled without any 

 advantage to the reader -, i therefore thought it 

 would be better to make an index, which will 

 furnifh an eafy method to the curious of com- 

 paring the two climates. 



8. If ever any ufe be made of Calendars of 

 this kind, it mull be by finding out, after a long 

 feries of obfervations, and publilhing by itfelf a 



R4 lift 



