1868.] 



BOOK NOTICES. 



403 



Dryopteris (Adans.) Schott. 



2. W. glabella R. Brown ; 



Onoclea, Linn. 



1. O. sensibilis Linn. ; 



2. O. Struthiopteris (Linn.); 



Dicksonia, L'Herit. 

 1. D. punctilobula (Michx. ) ; 

 Osmunda, Linn. 



1. O. regalis B. Linn. ; 



2. O. Claytoniana Linn. ; 



3. O. cinnamomea Linn. ; 



Botrychium, Swartz. 

 1. B. Lunaria (Linn.); 



b. simplex ; 

 2.- B. matricariasfolium A . Braun 



b. lanceolatum ; 



3. B. ternatum ( Thunb.). 



a. lunarioides Milde ; 



b. obliquum Milde ; 



4. B. Virginianum (Linn.) ; 

 Ophioglossum, Linn. 



vulgatum Linn ; 



No. 33. 



o. 



No. 47. 



The following supplementary species (of fern allies) are 

 intended to be included in the collection : — 



No 48. 

 No. 49. 

 No. 50. 



Lycopodium apodum Linn. ; 



L. rupestre Linn. ; 



L. dendroideum Michx. ; 



L. lucidulum Michx. ; 

 Equisetum robustum A . Braun 

 Eq. scirpoides Michx.; 



No. 51. 

 No. 52. 



No. 53. 



A complete set will be deposited in the Herbarium of the 

 Society. d. a. w. 



ARCHIVES DES SCIENCES PHYSIQUES. 



Prof. Oswald Heer, of Zurich, has continued his researches 

 into the Miocene Flora of Greenland, and has published the 

 results, and his inferences therefrom, in the above named period- 

 ical. By these researches our knowledge of the distribution of 

 vegetation in an era long prior to the present is increased, In 

 Prof. Heer's details we find that the Arctic Fossil Flora> so far 

 as known, now comprises 162 species, among which are eighteen 

 cryptogams, nine being tall, handsome ferns, that probably covered 

 the soil of forests, while on some of the others a growth of minute 

 fungi can be detected, as in analogus" species of our own day. Of 

 phanerogams 31 species are conifers, 14 are monocotyledons, and 

 99 dicotyledons; and judging of these by the existing Flora, 

 78 were trees and 50 shrubs, which gives a total of 128 species 

 of woody vegetables formerly distributed over the polar regions. 

 The pines and firs come near to those now growing in America, 

 particularly the Pinus Maculrii, which closely resembles the 

 P'uius alba of Canada. Cones of this tree were brought from 

 Banks Land by Capt. Maclure, who saw the stem of the tree in 



