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LiNNT^us from various parts of the world. Thofe 

 defcribed in the fecond century were tranfmitted 

 by Seguier from Verona \ by Salvages from Mont- 

 feller^ by Dr. Burman., who had received his 

 from the Cape of Good Hope and fome by Mr. 

 Miller of Cbelfea, The time elapfed fince the 

 publication of thefe papers hath not iefiened the 

 ufefulnefs of them, fince they are clofely connedled 

 with the Species Plantarum^ are referred to in that 

 work, and remain as fo many illuftrations of the 

 fyftem of LiNN^us. 



64. SoMNus Plantarum. p. Bremer. 1735. 



The fubjecft of this paper, at the time of its 

 publication, excited the attention of the curious 

 throughout Europe. That no6lurnal change to 

 which certain plants are liable, and which is 

 here analogically called Sleeps is more particularly 

 manifefted in thofe vegetables tkat are furniihed 

 with pinnated leaves, and of thefe; the Diadel- 

 phous clafs affords the greater number. The 

 change condfts in the different pofition which the 

 folioles^ or fmall leaves, alTume in the mght-iimQy 

 from that which they exhibit by day. Slight no- 

 tices of this faculty are met with in the antients ; 

 in this paper the obfervations have been extended 

 fp far, as to take in upv/ards of 40 fpecies, which 

 are here enumerated, and divided into ten clalFes, 

 according to the differences obfervable in the po- 

 rtion of the leaves, during this keeping ftate. 

 The late Dr. Hilk t>y a welLinftituted fet of expe- 

 rimentSj fully confirmed the idea^ that this change 



T 3 was 



