282 NEW PUBLICATIONS. 
northern point is about the same as that of Berwick-on-Tweed and the 
southern extremity of the Isle of Arran; and the fifty-fourth parallel of 
latitude, which Dr. Dickie takes for his southern boundary, passes not 
far from York and Lancaster. It includes considerable areas both of 
basaltic and granitic rock, and the sedimentary formations are repre- 
sented from the Silurian wp to the Chalk and Greensand. In county 
Down one of the peaks exceeds 900 yards, which is higher than any of 
the English hills, except those of the Lake district ; and both in Done- 
gal and Mayo there are peaks which exceed 800 yards. The mean 
annual temperature of Belfast is almost precisely the same as that of 
Greenwich, but the difference between the summer and winter months 
is appreciably smaller in the north of Ireland, and the difference be- 
tween the actual extremes of temperature is notably less. What with 
proximity to the Atlantic, the indented character of the coast, and the 
occurrence of two large inland lakes, the aerial humidity is doubtless 
much greater than a comparison of 33 with 25—the respective rainfalls 
in inches of Belfast and Greenwich—gives an idea of. And finally 
there are stations for plants ranging from the rich green meadows and 
fertile corn-lands and flax-fields of the east, down the scale to where, in 
Donegal, over miles of dreary moor, Schenus nigricans has, in the 
struggle for existence, conquered so thoroughly its competitors that 
they have all declined the unequal contest, arid only a few scattered 
tufts of Erica cinerea and Calluna still linger on sufferance. 
Checking off Dr. Dickie’s list of species, according to their types of 
distribution, as given in the fourth volume of the ‘ Cybele, we obtain 
the following result .— 
Out of 532 speciés reférréd by Mr. Watson to the British type 
M m the North "d Ireland, according tó Dr. Des 
Out of ioo anaes of the English type, North Dd has is. 
» ani 
70 " Atlantic type, i - 
81 " Scottish type, » 49. 
120 z Highland 34. 
37 5 Intermediate type, y 7. 
49 " Local type, ” 6. 
This gives us a total of 806 for North Ireland out of 1425 for Britain, 
and there are 3 others, Arenaria ciliata, Carex canescens, and Saxi- 
