188 THE AUSTRALIAN NATURALIST. 
tive is the Dolphin’s teeth, which are sold to island traders, 
who dispose of them to the natives of certain Pacific Islands, 
as well as Papua. 
Though a number of useful Sponges are to be obtanied in | 
abundance in our waters, nothing in a commercial way has, — 
so far, been done with them. 
There appear to be also great prospects for the deve- 
Icpment of an industry for the utilisation, in a commercial 
way, of our marine Algae, for the purpose of preparing vege- 
table isinglass, seaweed glue, etc., etc. Nothing has been 
attempted in this State so far, in connection herewith. 
[The full text, with additions and illustrations, of Mr. 
Stead’s address is being published by the Department of Fish- 
eries, under the title of ‘‘A Brief Review of the Fisheries of 
New South Wales: Present and Potential.’’—Eb. ] 
REPORTS OF EXCURSIONS. 
Trip to LINDFIELD. 
Juty.—The excursion to Lindfield on the 3rd July was 
somewhat marred by wet weather. A number of members 
braved the elements, however, and followed the leader, Mr. 
L. Harrison, down into the gullies on the Middle Harbour 
side. A number of interesting botanical specimens were ob- 
tained, and several species of galls were collected, which 
were identified by Mr. W. B. Gurney. Unfortunately, the 
prevailing cold had delayed the nest-building, and the only 
ornithological item of interest was a last year’s nest of the 
Grey Thrush, beautifully situated in a depression in the 
charred bole of a large hollow gum.—L. Harrison. | 
Visir to THE Macteay MUSEUM. 
AuGuUsT.—About twenty members and friends tool part in 
this excursion. Meeting in front of the Great Hall of the 
University at 2.30 p.m. (on the 7th August) the party ad- 
journed to the Museum, where, before making any inspec- 
_ tion, I gave those present a short address upon the history 
of the collections, and also of the Museum itself, since its 
' foundation at the University. This address was listened to 
with much apparent interest by those present, and I now 
take the opportunity of officially thanking them for their at- 
tention, both there and during the tour of inspection, which 
lasted about an hour and a half.. As these collections were 
new, or very little known to most, attention was bestowed 
only on those exhibited in the glass cases, and these—as was 
thought—proved, by their wide range, as well as by their 
quantity, to be more than enough. As my particular “‘forte”’ 
lies more with the Fishes and Crustaceans, and some other 
