26 J. B. CLELAND. 
reached that until a School of Ceramics, with a thoroughly 
qualified director, is established, research into these matters 
cannot be usefully undertaken. 
11. Miscellaneous.—The following gives some idea of 
the range of miscellaneous matters dealt with by the 
Executive Committee :—Manufacture of cylinders for hold- 
ing compressed gas, manufacture of starch, manufacture of 
white lead, bleaching of pith cane, botanical and forestry 
survey of Papua, the training in England of Australian 
apprentices, recovery of potash from eucalyptus distil- 
leries, production of oxidised linseed oil, remission of duty 
on alcohol for scientific purposes, the most suitable times 
for felling timber, brown coal, War Profits taxes and the 
chemical industry, production of vinegar, transmission of 
disease through mouse-infested wheat; utilisation of waste 
fruit, of leather shavings, of waste paper, of wood shavings, 
of willow bark and of vegetable dyes, sugar from grapes; 
liability of copra to spontaneous combustion, chemical ret- 
ting of flax, regulations regarding the use of small stills for 
laboratory work, patent fodder cakes for’ stoek,. 
manufacture of tinplate in Australia, milling tests for 
flour, the production of tar oils, remission of duty on alco- 
hol used in the manufacture of rennet, atmospheric nitro- 
gen. 
Worm-Nodules wm Cattle—The difficult task of discover- 
ing the means of transmission of the larve of the nematode 
worm, Onchocerca gibsom Jnstn. et Cleland, from one bo- 
vine to another still awaits solution. As a result of a 
careful survey of the whole subject, and especially of our 
experiences on Milson Island, in the Hawkesbury River, 
it seemed highly probable that the most likely vector of the 
parasite was a March fly. Previous experiments having 
been unsuccessful, Dr. (now Professor) S. J. Johnston and 
I approached the Advisory Council of Science and 
