MAGAZINE OF SCIENCE AND ART. 
217 
the out door stroke is proportionately increased 
and the danger in this case is that the cylinder- 
cover might possibly he fractured. This has 
sometimes taken place, but a little attention on 
the part of the engineer will prevent the possibi¬ 
lity of such an occurence. 
Of the cost of raising water with pumping en¬ 
gines, exaggerated conceptions are sometimes 
formed. Mr. Wicksteed, engineer to the East 
London Water Works Company, has, however, 
recorded the following statement of the cost of 
pumping water by 4 single acting engines by 
Boulton and Watt, and 1 single acting Cornish 
engine by Harvey and Co., which clearly proves 
the great superioty of the latter, and the small 
cost of raising water by its ageney. 
COMPARATIVE STATEMENT OF THE COST OF RAISING WATER. 
Description of Engines. 
Quantity of 
water raised per 
diem. 
Height to which 
the water is 
raised. 
Cost of raising 
1000 gallons 
100 feet high. 
1.—Two single pumping engines by Boul¬ 
ton and Watt, working 24 hours per 
diem, 7 days per week. Mean power 
Gallons. 
Feet. 
Pence. 
of each engine 30J h.p. 
2.—Two singlo pumping engines by Boul¬ 
ton and Watt, working 12 hours per 
diem, 7 days per week. Mean power 
2,922,480 
90 
0.358 
of each engine 76 h.p. 
3.—One single pumping engine by Harvey 
and Co. (Cornwall) working 24 hours 
per diem. 7 days per week. Mean 
3,601,116 
100 
0.333 
power, 95J h.p... 
4,107,816 
110 
0.150 
In all these cases, all charges for working the engines, coals, labour and stores are included. To 
raise 160,000,000 of gallons 100 feet high would cost therefore :— 
By 1st Statement .£238 
2nd Ditto . 222 
3rd Ditto . 100 
The cost, therefore, of raising water by the Cornish high pressure, expansive and condensing 
steam engine, is to the cost of raising it, by the ordinary Boulton and Watt engine, as 100 is to 
238 or as 1 to 2.38. 
This statement, therefore, clearly proves the superior economy of the Cornish engine as compared 
with the Boulton and Watt engine for water works purposes, and its advantages are so manifest 
that it should unquestionably be employed in every case where a large body of water has to be 
lifted perpendicularly, 
F. S. P. 
Sydney, January 20th, 1858. 
TRANSACTIONS OF THE AUSTRALIAN 
HORTICULTURAL and AGRICULTURAL 
SOCIETY. 
FOURTEENTH MONTHLY MEETING. 
Held in the Hall of the Chamber of Com¬ 
merce, Sydney Exchange. 
Tuesday, March 2nd, 1858. 
Mr. William M'Donell in the chair. 
Members of Council present:—Messrs. 
Wm. M'Donell, D. M'Innes, G. A. Bell, 
M. Guilfoyle, T. Day, P. L. C. Shepherd, 
J. Graham, W. Deane, Hon. Sec.; and 
about thirty members and their friends. 
MINUTES. 
Minutes of last meeting read and con¬ 
firmed. 
EXHIBITS. 
The Secretary announced that the Coun¬ 
cil had awarded the following prizes :— 
Militonia Clowesii, silver medal to Mr. 
H. Matthews, gardener to R. Tooth, Esq., 
M.P. 
Phalcenopsis sp. Batavia. Honourable 
mention to Mr. H. Matthews for cultivation. 
Bedfordshire foundling Apple, to which 
the following remark was attached :—De¬ 
scribed by Thompson, of the Experimental 
Gardens, London. Color, yellow ; form, 
roundish, oblate, large size ; quality, first 
rate ; in use from November to March. 
This very handsome and excellent apple 
is of Bedfordshire origin, and in many 
English nursery catalogues is called the 
Cambridge pippin; hardy, and a good 
hearer. Tree from Edinburgh, 1834. 
Bronze medal to Mr. G. A. Bell, North 
Shore. 
