PINUS AND ARAUCAUIA IN LIAS. 487 
curs ill wood from the Coal formation of Nova 
Scotia and New Holland. 
The same ordinary structure of Pines predo- 
minates in the fossil wood of the Lias at Whitby; 
trunks of Araucarias also are found there in the 
same Lias ; and branches, with the leaves still 
adhering to them, in the Lias at Lyme Regis4 
Professor Lindley justly remarks that it is an 
important fact, that at the period of the deposit 
of the Lias, the vegetation was similar to that of 
the Southern Hemisphere, not alone in the 
single fact of the presence of Cycadeae, but that 
the Pines were also of the nature of species 
now found only to the south of the equator. Of 
each other, and are sometimes circular, but mostly polygonal. 
Mr. Nicol has counted a row of not less than fifty discs in a 
length of the twentieth part of an inch, the diameter of each disc 
not exceeding the thousandth part of an inch ; but even the 
smallest of these are of enormous size, when compared with the 
fibres of the partitions bounding the vessels in which they occur. 
f A trunk of Araucaria forty-seven feet long was found in 
Cragleith Quarry, near Edinburgh, 1830. (See Witham's Fossil 
V^egetables, 1833, PL 5.) Another, three feet in diameter, and 
more than twenty-four feet long, was discovered in the same 
quarries in 1833. (See Nicol on Fossil Coniferse, Edin. New Phil. 
Journal, Jan. 1834). The longitudinal sections of this Tree ex- 
hibit, like the recent Araucaria excelsa, small polygonal discs, 
arranged in double, and triple and quadruple rows within the 
longitudinal vessels ; so also does a similar section from the Coal 
field of New Holland. 
I See Lindley and Hutton's Fossil Flora, PI. 88. A fossil 
cone referrible to Coniferse, and possibly to the genus Araucaria, 
from the Lias of Lyme Regis, is represented at Plate 89 of the 
same work. 
