529 
the Colony of Western Australia. 
montory, consists of long, sandy beaches that extend for many miles. On these, 
in stormy weather, many beautiful plants are cast up ; but, owing to the fine- 
ness of the weather during nearly the whole of my stay, my success must have 
fallen far short of that of a collector in average seasons. I am convinced of 
this from the reports I heard from many persons at Fremantle ; and also from 
the fact that thirty of the species found by Preiss were not ascertained by me. 
Nevertheless, I more than doubled my previous list, finding very many species 
not in Peeiss’s collection. Some of these were dredged in the bay, in 5 or 6 
fathoms water, but the greater number were picked up on the beach. Amongst 
the most remarkable of the Fremantle plants are Claudea elegans (found by 
George Clifton, Esq.), and Kallymenia cribrosa. Halophlegma Preissii is 
very common ; so also is Dasya tenera, which, in a very few minutes after it has 
been removed from the water, melts into a rose-coloured, gelatinous mass. 
Halosaccion firmum and H. Hydrophora., apparently identical with the Kam- 
tchatkan plants, are also very frequent ; and Eucheuma speciosum, the jelly 
or blanc-mange weed of this colony, floats on shore in great abundance after 
winter gales. 
Whilst residing at Fremantle, I made three excursions to Garden Island, 
distant about nine miles in a S. W. direction, landing each time on the northern 
and north-eastern beaches. On all these excursions I made very considerable 
collections of drifted plants, finding several species not seen or very rarely met 
with elsewhere. Among these the most remarkable were Sarcomenia deles- 
serioides and S. hypnceoides ; and Lenormandia spectahilis, which is here ex- 
tremely abundant, varying greatly in size, and in the breadth of the frond. I 
noticed that several species found at this island were much more luxuriant than 
individuals of the same kind collected at Rottnest Island, a few miles to the 
north. This is especially the case with Griffithsia Binderiana, — the specimens 
from Garden Island being four times the size of those from Rottnest. This I 
attribute to the fact, that at Rottnest this species always grows on Zostera; 
whilst at Garden Island it attaches itself to various Algm ; and the observation 
(coupled with other similar ones elsewhere made), seems to render it probable 
that Algm really derive nourishment from the soil on which they grow. 
From Fremantle I moved to Rottnest Island, about the end of May, and re- 
mained till the end of June, a period of six weeks. This little island is situated 
