188 
ON TRACKING OR TOWING BOATS. 
i<5 the case at present in India ; indeed might 
not the poor in the workhouses be rendered 
available, thus affording them amusement and 
profit? 
With regard to rearing other silk-moths, I 
am well convinced that the Pavonia minor 
might be propagated to any extent in this 
country, as the larva are general feeders, 
probably the Lacquey Moths might also be 
rearerl with success ; the larger PovonicE of 
Europe, and other countries should also be 
tried. But a great object would be to import 
the eggs and breed the Atlas Moths in Eng- 
land, which have already yielded a fine silk 
well worthy the attention of the manufacturer 
of Great Britain, 
As there is not time at present to enter into 
the merits of the Tasseb, Arrindi, Bugby and 
Kilisurra silk-worms of India, I merely men- 
tion the chief writers on tliis subject, viz. the 
celebrated James Anderson, Dr. Roxburgh, 
General Hardwicke, and Colonel Sykes, the 
two last, I arn happy to say, are members of 
this Society, and 1 am sure will most willing- 
ly give all assistance in their power towards 
the attainment of so desirable an object as that 
of rearing silk in this country * 
* Should the first attempts fail, eventually 
there is every reason to lielieve that success 
In concluding these remarks, I would sug- 
gest the formation of a committee to investi- 
gate all that relates to silk. Let the silk ma- 
nufacturer learn that the committee is disposed 
to give him all the assistance in its power, 
that it is equally desirous of his advice and 
observation ; let the mechanic learn that we 
need his practical aid on which he alone can 
give us useful assistance. A report, emanating 
from this society, embodying in it the opinions 
of the manufacturer and entomologist, would 
do some good. If the object of producing silk 
in England fail altogether, we shall still have 
the merit of meaning well ; should it exceed, 
however, thousands of our poorer countrymen 
will find employment and reap the benefit. — 
Transactions of the Entomological Society of 
London, vol. i. 1835. 
must follow perseverance as it has already 
done in other countries Till that wished for 
period arrives, I would earnestly recommend 
not only^he increased cultivation of silk in 
India, but in all our colonies, most particularly 
in New Holland. At the Cape of Good Hope, 
at the Mauritius, at Malta, at the barren rocks 
of St Helena, the silk-worm has been intro- 
duced with partial success ; and from those 
countries may we not in future calculate on 
some increasing produce ? 
SPECIFICATION OF THE PATENT GRANTED TO JAMES BOYDELL, JUN., OF 
DEE COTTAGE, NEAR HAWARDEN, NORTH WALES, FOR IMPROVEMENTS 
IN MACHINERY FOR TRACKING OR TOWING BOATS OR OTHER VESSELS. 
' Sealet\.^ 
To all to whom these presents shall come, 
&c. &c. — Now know ye, that in compliance 
with the said proviso, I, the said James Boy- 
dell, do declare the nature of my said inven- 
tion to consist in the construction and ar- 
rangement of certain apparatus of machinery 
by which boats or other vessels maybe tracked, 
towed, or moved, in a manner possesing par- 
ticular advantages , under particular circum- 
stances, as will be hereafter explained ; and 
the manner in which the same is to be per- 
formed or carried into effect, will be more 
clearly seen by reference to the annexed 
drawing, and the following description 
thereof. 
It will be remarked that certain letters and 
figures of reference are used in this deserp- 
tion and drawing, but that the same letters, 
when repeated, indicate the same parts 
throughout. 
DESCRIPTION OF THE DRAWING. 
Fig. 1, represents a sectional view of a 
ferry or ford to which my improved apparatus 
or machinery is applied, and. 
Fig. 2, a plan or bird’s eye view of part of 
the same machinery or apparatus. 
In these figures, a, represents a ferry boat 
floating on the surface of the water, and, a, c, 
the chain or cable, which I call the bridle, by 
which it is held and prevented from drift- 
ing by the current or stream, h, b, indicate 
the high water mark, and, c, c, the low water 
mark (see fig. 1) ; this ferry being subjected 
to the influence of the tide, b, b, represent 
tv7o inclined planes or landing places of 
masonry, for the convenience of landing car- 
riages or passengers at all times of the tide. 
