528 Dr. W. H. Haevey’s Account of the Marine Botany of 
and Ectocarpus siliculosus, two plants of rapid growth, and both belonging to 
forms which are rare in the warmer, and abundant in the colder waters of the 
sea. Just above the laminarian belt, and extending into it, several social Lau- 
rencice, both here and on other parts of the coast, cover the rocks, often in very 
wide patches. 
Nothing of any interest was collected in Oyster Harbour ; nor was dredging 
in the Sound attended with any very remarkable result. Very little of the 
amount dredged had been detached by the dredge ; the greater portion con- 
sisted of drifting plants, collected by currents and eddies on various parts of 
the sandy bottom. The deepest fucoid plant, observed in situ, was Scaberia 
Agarclhii, which abounds on every part of the coast explored by me in 2-5 fa- 
thom water. Wherever Caulinia antarctica can find a footing, its wiry stems, 
but rarely its leaves, are generally found covered with parasites, many of which 
(such as Thuretia, Halophlegma, and various Dasyce) are very curious and beau- 
tiful. The parasites on Zostera, on the contrary, usually grow on the leaves, 
not on the stem ; and here are found Chondrice, Griffithsice, Callithamnia, 
Wrangelioe, Crouanioe, &c. 
I spent the month of March at Cape Riche, a bold promontory, about 60 
miles by compass, and 70 or 80 by land, to the east of King George’s Sound; 
and famous for the beauty and variety of flowering plants found on the hills in 
its neighbourhood. Here I was the guest of Geokge Cheyne, Esq., who has 
a farm and sheep-run at the Cape. The dry season had advanced too far to 
permit my seeing this beautiful district to the best advantage, or to allow of 
iny making an extensive gathering of land plants ; and the sea-shore proved to 
be singularly barren in Algm. The ordinary Fucoideoe {Sargassa and Cysto- 
phorae), with EcUo7iia radiata, chiefly occupy the laminarian zone; and the 
smaller Ehodospermece, scattered among them, are few, and of little interest. 
Here, nevertheless, I collected a new Genus (Lasiothalia), and a remarkably 
fine Liagora (A. Cheyniana). 
Early in April I started, overland, for Swan River, and on the 21st reached 
Fremantle, where I remained till the 21st of May; and returned again for the 
first fortnight in July. At this place the algologist must depend, either on the 
dredge, or on the western gales, which frequently throw drifted plants ashore. 
The coast at both sides of the town, which is built on a little calcareous pro- 
