632 



ORDINARY MONTHLY MEETING. 



November 29th, 1911. 



Mr. W. W. Froggatt, F.L.S., President, in the Chair. 



The President reminded Candidates for Fellowships that Thurs- 

 day, 30th inst., was the last day for sending in applications. 



The Donations and Exclianges received since the previous 

 Monthly Meeting (25th October, 1911). amounting to 7 Vols., 

 66 Parts or Nos., 29 Bulletins, 4 Reports, and 7 Pamphlets, 

 received from 53 Societies, Ac , and two Individuals, were laid 

 upon the table. 



NOTES AND EXHIBITS 



Mr. D. G. Stead showed: (l)An aboriginal " Nulla-nulla " 

 which he had obtained from a fork in a giant river " Red Gum," 

 Eucalyptus rostrata, on the banks of the Murrumbidgee River 

 at Grong Grong Station, a few luiles above Narrandera. The 

 weapon had apparently been deposited in the tree by a high flood, 

 as there was a certain amount of silt as well as silted leaves and 

 sticks; while there was dried river-mud on the object itself. 

 (2) The skull of an aboriginal Australian which had recently been 

 picked up by some fishermen on top of a mound of sand at the 

 back of the sea-beach at "The Gibber," a small headland a little 

 to the southward of Broughton Island. (3) A number of examples 

 of the seaweed known as "Balloon-weed," " Bubble-weed,"- or 

 "Bladder-weed," Colpomenia sinuosa, attached to oysters, cockles, 

 and pieces of Black Mangrove. At certain seasons and in some 

 localities this weed is one of the worst and most troublesome of 

 oyster-pests. At the present time it is particularly bad on certain 

 oyster-leases at Wallis Lake. The plant grows over the oysters, 

 and then as the "balloons" grow larger and gas forms within 

 them, the whole is floated to the surface and carried ofiF by the 

 tide either to be lost in deep water (after the collapse of the plant), 

 floated on to another man's lease, or to be drifted up to the limits 



