KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 50. N:0 3. 



75 



at which latitude the species in question are more or less common. There is no 

 station for observations between them. The figures are taken from the Chilean Anu- 

 ario Meteorolögicol902 — 1906, it is of course a disadvantage that we cannot compare 

 the two Chilean stations with Port Stanley for the same years, but there is no help 

 for this. Probably it does not affect the results very much. 



station 



D e 



c e m b e r 



J a n u a 



r y 



F e 



b r u a 



r y 



S 



a m m 



8 r 



Evangelistas 



Port Stanley 



Ancud 



a 



cS 



Means 

 of daily 

 maxima 



Means 

 of daily 

 minima 



Vi 



a 

 rf 



Means 

 of daily 

 maxima 



Means 

 of daily 

 minima 





Means 

 of daily 

 maxima 



Means 

 of daily 

 minima 



3 



Means 

 of daily 

 maxima 



Means 

 of daily 

 minima 



7.4 



9.8 



13.4 



8.9 

 12.2 

 16.7 



5.7 



4.8 

 8.5 



8.7 

 10.1 

 15.1 



10.2 

 13.1 

 19.2 



7.5 



5.7 



10.4 



8.4 



9.6 



14.4 



9.9 

 12.8 

 18.7 



6.9 



5.8 

 9.9 



8.1 



9.8 



14.3 



9.7 

 12.7 

 18.2 



6.7 

 5.4 

 9.6 



The summer is conspicuously (1.7°) colder in Evangelistas than in the Falkland 

 Islands. There is indeed a still greater difference between the latter place and 

 Ancud ; but, on the other hand, I think that the southern boundary of the species 

 in question, is not reached with the latitude of Ancud, and, further, on the Falk- 

 lands they do not grow in the vicinity of Stanley, but in the West Falklands. This 

 shows how desirable a series of observations would be that came from a place in 

 the western part of the archipelago. In spite of this gap I have found the table 

 rather instructive. 



All the endemic species ^ point toward a Magellan origin. They may have 

 survived the time of solifluction, but disappeared from South America. Also we 

 must not forget, that the subantarotic lands are not so well known as would be 

 desirable. The amount of Falkland endemics has decreased considerably by recent 

 discoveries of the same species in Patagonia or Fuegia, and other important finds 

 may be in store for the future, likely to diminish their number still more. 



J. G. Andersson's opinion is, that the Falklands were submerged considerably 

 during the postglacial time, only forming a scattered archipelago of smaller Islands. 

 Such a submergence would not fail to act upon the composition of the vegetation 

 — it would perhaps be mentioned in order to explain the extreme meagreness of 

 the Alpine flora, However, the whole submergence must be regarded as rather 

 doubtful till further proofs have been obtained (compare Halle, p. 108). 



If we try to summarize our knowledge on the history of the flora, we shall 

 arrive at the following conclusions. 



1) That, during the Tertiary, the Falklands were above their present leavel; 



2) that this emergence may have been sufficient to establish a land connection 

 with South America, even if of short duration; 



- Except Calundrinla Feltonii, wliicli, if we do not take into consideration tbat it is endemic, should 

 be clas.sed in group 2 A! 



