466 
Implement Show at Leicester. 
the motion of the imiilcraont, and insured all the ground being moved. Tlie 
average measured de[)th w:is Of inches, corresponding to a weight per super- 
ficial yard of 35 stones 12 lbs., the bottom more even than in the previous 
experiment. The width cultivated at each turn was 4 feet 6 inches, whilst 
the implement, if furnished with all its tines, was calculated to disturb 5 feet 
3 inches. The time of work was again one hour, the area cultivated 3 roods 
G perche.'! ; 7 acres 3 roods 20 perches per day of ten hours. 
Experiment No. 3. — The last implement, which was worked by the pair of 
single drum engines, was a four-furrow digger (2494), which can be used as a 
plough by substituting mould-boards for the skeleton breasts. 
The depth of the digging varied ; at first the deptli was greater than after- 
wards, when, owing to the hard bottom, the shares became much worn. The 
.nverage depth was 8 inches, corresponding to a weight of soil moved per super- 
ficial yard of 43 stones 4 j lbs. The floor was left very even. The time of running 
was 1 hour, the area dug 2 i-oods 11 poles, being at the rate of 5 acres 2 roods 
30 perches per day. 
The pace at which the implement moved was barely 2 miles per hour. 
We may here notice a very simple alteration which has been made by 
Messrs. Fowler in all their balance implements, viz., the application of an arm 
consisting of a bar of iron projecting slightly upwards from each end of the 
implement, over a hook in this arm the tail rope is carried, and the con- 
siderable pressure thus obtained tends to keep the implements steady 
to their work, and counteracts the vibration caused by the uplifted frame at 
the forward end of the implement. 
The cost of the two engines, with the rope poi'ters and 800 j'ards of 
steel rope, is 1224Z. ; the 5-tine cultivator costs 60^., making the total cost 
1284?. 
' No. 2423, Foiuler's two 10-horse power single cylinder traction engines, 
with two winding drmns on each engine, are generally so similar to the single 
drum engine, 2482, that they may be described in a few words, by saying that 
the difference between these engines and 2482, consists simply in their having 
each two drums, the drums themselves being similar to the single drum 
of 2482. The mode of employing these engines is novel ; one of them is 
placed on each headland, and there are two ropes and two cultivating imple- 
ments passing from engine to engine. 
In this way both engines have one drum each at work at the same time, 
and one drum each unwinding at the same time. It is intended that the 
implements, starting simultaneously from the two engines, should traverse 
half the width of the field, meeting in the middle, and then return to their 
respective engines. 
We consider this a costly and complicated system, which has been called 
forth by a fancied objection that has been urged against the two single drum 
engines (namely, that only one engine is working at a time), Viut is not a veal 
improvement in the art of steam ploughing, and we believe that any 
theoretical advantage apparently due to the fact of both engines working at 
the same time, is more than counterbalanced by tlie extra cost and weight 
of the engines,* and, above all, by the fact, which was proved in the experi- 
ment, that it is not possible in practice to make the two implements perform 
tlieir journeys with such regularity that the engines should work without 
interruption. It appears to us that even with the best management, a 
stoppage arising from one engine having to wait for another is inevitable. 
The method of working the double drum engine is as follows : — The two 
* In actual practice it is found that for the short time one engine stands, whilst 
the other is ploughing in the single drum system the steam can very well be 
accumulated, and that therefore a smaller boiler is sufficient. 
