342 A. LIVEBSIDGE. 
Test No. 1. Upon one litre, 11th December, 1894. No colour 
nntil 8th February, 1895, when the light brown sediment showed 
a reddish ring. 
Test No. 2. Upon two litres. Amethyst tinge. Second extract 
with Cl water gave a bluish tinge and the sediment had a slight 
pink colouration. 
Test No. 3. 1225 cc., 21st June 1895. On the 24th June, the 
white sediment showed a pink tinge at top +3;" deep ; on July 10th 
1895, the sediment was pale brown with an onyx-like layer near 
the top, with faint purple tinge. 
On April 3rd, 1895, the precipitate in each test tube of the 
first batch of southern waters had changed to a dirty, almost black, 
colour, 7.e,, after an interval of nearly four months from the 
‘initiation of the experiment, viz., from 18th December 1894 to 
3rd April 1895. 
It was noticed, in some instances, that after long standing the 
pink or violet tint gradually faded, especially on the side exposed 
to the brighter light of the window, in some cases the colour 
disappeared totally. 
Northern Sea-Waters. 
No. 1. Collected February 19th, 1895, about one and a half 
miles off Sandy Point, Richmond River, Lat. about 28° S. 
No. 2. Collected at North Solitary, Lat. about 29° S., February 
19th, a strong southerly current. 
No. 3. From about four miles off Smoky Cape, Lat. about 30°, 
on February 20th. 
No. 4. From two miles off Tacking Point, Lat. about 31° 30; 
February 20th. 
No. 5. From two miles off Cape Hawke, Lat. about 32° 2, 
February 20th. 
Wo. 6. About five miles off Port Stephens, Lat. about 3% 
February 20th, 
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