26 
ductivity of the straw, is at the same time 
chilled by the process of evaporation 
from paddled clay. The consequence is 
that during the night the moisture in the 
‘compartively warm air is condensed on 
As the 
‘condensation daring the night is in excess 
the surface of the cold clay. 
of the evaporation during the day, the 
pond becomes, night by night, gradually 
filled. The dew pond will cease to attract 
he dew if the layer of straw should get 
wet, as it then becomes of the same tem- 
perature as the surrounding earth, and 
so ceases to act asa non-conductor of 
heat 
allowed to 
This always accurs if a spring is 
run into the pord. In 
practice, it will be found that the pond 
will afford perennial supply of pure water. 
The question arises—Could such ponds 
be utilised in South Australia? It seems 
most reasonable to suppose that they 
could, Take, for instance the west coast 
and Nullabor Plains, These districts are 
most notorious for their heavy night dews 
caused by ‘cool nizhts after clear, hot 
days. It is on record that a young camel 
calf was lost when the Goverment had a 
‘party of searchers for artesian water under 
Mr. J. 
affairs (he being Conservator of Water n 
the eighties). 
a full-grown and flourishing state two and 
W. Jones, who was directing 
The camel was recovered in 
ahalf years later, having subsisted all that 
time, as faras water was concerned, on 
the heavy falls of dew, there being no 
water on the surface for hundreds of 
miles. Such being the case, 1t seems 
worth the trial of putting the dew pond’ 
to the test. 
be only & matter of time till the whole of 
the fertile Nullarbor}Plains could be made 
habitable. 
If one succeeds, then it must 
— Care Required, — 
‘Several things must be strictly looked 
after in the experiment tofensure success. 
1: Thepond must be well and ‘carefully 
constructed according to rules laid down. 
2. The strictest care must be taken to 
protect the top edge of the straw from in- 
truding moisttire. 3. The pond must be 
well fenced and water taken out only by 
bucket or pump, in order to take care of the 
margin. The writer would suggest that 
when the straw is laid like an invented 
THE AUSTRALIAN GARDENER. 
thatch (very thick), a lining of wire net 
ting should be spread all over it, well 
fastened together. Upon this spread a 
thich layer of concret (as lime is plenti- 
ful), then a skin of cement; over this a 
thin layer of clay, which need not be of 
the best, as it would not be required to 
ma e the pond water tight, but only to 
This, at 
all events, if successful, after the manner 
give surface for condensation. 
of English ponds, would give all the 
water that would be required for the rail- 
ways, leavirg the settlers to work out 
their own salvation after the example 
Will Australia repeat 
the history of the pulaolithic pondmakers? 
was once set. 
It is certainly a better climate and 
better opportunities. 
Notice of Removal. 
Owing to the great increase 
of patronage we are receiving 
from the public, it has been 
found necessary to enlarge 
our Staff and Printing Plant, 
to do which we have been 
compelled to remove to 
MORE COMMODIOUS 
PREMISES. 
We wish to notify our 
readers and the general public 
that our new premises are 
situated at 
20 WAYMOUTH STREET 
(immediately over Scrymgour’s 
Town & Country Business and 
Property Exchange). 
Note New Address— 
20 Waymouth Street 
Adelaide. 
E. BLACKEBY, 
BOOT & SHOK MANUFACTURER, 
226 Rundle Street, Adelaide. 
Cut Soles a Speciality. 
February, 1910 
—————————————. 
G. A. PREVOST & CO., 
Currie Street, 
ADELAIDE. 
FRUIT EXPORTERS 
ON GROWERS’ ACCOUNT. 
EVERY FACILITY GIVEN. 
Sole Agents in S.A. for— 
Nicholls’ Arsenate of Lead 
i Bordeaux Paste 
oe Fungicide 
Hs Tusecticide 
‘Bave-w’ Power Sprayers 
Jones’ Lancaster Hand 
Sprayers. 
Barger’s Disc Cultivators 
Write for Illustrated Pamphlet. 
Suppliers of— 
FRUIT EXPORT CASES, WOOD 
WOOL, WRAPPING PAPER, 
CORK DUST. 
oz. That You Can 
aa Have 
Diss Your Worn and Dis- 
——~ catded Silverware 
Re-Plated and Made 
to Look Like New by 
sending it to 
B. WALLIS, 
78 Flinders St. 
Satisfaction Guaranteed 
Bickford’s 
Arsenate o Lead 
An infallible insecticide for all leaf- 
eating insects, including Codlin Moth, 
Potato Bug, Curculio Beetle, Apple 
Root Borer, etc. 
Does not burn the foliage 
Gives rise to no poisonous dust 
No danger to the sprayer 
Adheres firmly to the leaves 
Mixes with water in any proportion 
One pound of Paste makes 30 gallons 
of Spray. 
No Lime Required. 
