2 s 



70° oi" less, in which case 

 local thundershowers. 



no rain follows except some light 



Whirlwinds are very rare about Ardrossan (this place is 

 about 45 miles north-east of Port Adelaide). 



During the prevalence of north-east and north-west winds 

 the shores of the mainland can be plainly discerned, sometimes 

 incuriously distorted outlines (25th August, 1879), and then 

 the Port Adelaide Light is seen distinctly at night, which 

 is not the case when the south-east, south, and south-west 

 winds blow. The distance between the shores of St. Vincent's 

 ■Gulf at Ardrossan varies from 20 to 35miles. 



The total number of species contained in the list amounts to 

 363, exclusive of eight remarkable and well-defined varieties, 

 comprised in 206 genera and 67 orders. Most of them have 

 been gathered around the port of Ardrossan. Of those 

 obtained elsewhere, the name of the locality has been appended 

 to the name ; thus 30 are recorded as peculiar to Yorke Valley 

 and the adjoining hills to the east ; twelve from Kilkerran ; 

 nine from Muloowurtie ; and twelve from Maitland Road, by 

 which is meant the low tract of ground between the Ardrossan 

 and Yorke Valley ridge of hills. 



The following table indicates the geological distribution of 

 plants, according to the present state of inquiry : — 



Formation. 



Abbreviat. 



Dicotyled. 



Monocotyl. Acotyled. 



Total. 



Coast and Coastplain . 

 Coastplain& Tertiaries 



Tertiaries & Primaries 



Common to all, general 



Total . . 



C. 

 C. and T. 



T. 

 T. and P. 



P. 



G. 



74 

 27 

 21 

 32 

 81 

 70 

 1 



14 



12 



4 



3 



11 



19 



1 



1 

 

 

 

 1 

 2 

 



89 

 39 

 25 

 35 

 93 

 91 

 2 





303 



G4 



4 



371 







incl. 8 var. 





It will be seen that the coastlands furnish the greatest 

 number of species, viz., 208, or about 61 per cent. ; the 

 tertiaries the smallest, with 184, and the primaries with 204, 

 seeming somewhat richer. But the aspect changes, when we 

 consider the respective areas occupied. Then we see at a 

 glance that for any given equal extent the tertiaries present 

 the greatest variety, especially if we consider the eastern coast- 

 plain as belonging to the tertiaries under the influence of the 



