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INTRODUCTION. ll 
tures ; hence the daily opening and shutting 
of the flower has been called Horologium 
Flore. 
It has been very truly observed that flowers 
were the first playthings of Linneus; whose 
motto was, 
Tantus amor florum. 
This devoted lover of flowers carefully noticed 
the sensibility of plants, and composed a horo- 
loge of flowers. The list is given in his “ Phi- 
losophia Botanica,’’ which, however, is only 
valuable to us in giving the names of plants 
which open and close at stated periods, as the 
time given is for the meridian of Upsal, and 
we must therefore, in order to form one for 
Britain, make our own observations. For the 
use of our friends we have given a list of twenty- 
four (all of which may be easily procured), 
extracted from that magnificent and useful 
work, the Encyclopxdia of Gardening, by J. C. 
Loudon, Esq , and by observation of the fol- 
lowing plants, also the ingenious reader may 
be enabled to add to the number. Many 


