147 
TRANSACTIONS OF TUB SECTIONS. 
supply of the two lowest coins in the proposed scries, viz. centimes and two-centime 
pieces; and for centimes he proposed the form of the Chinese cash, for the »» c ° 
distinction and more general convenience in all small transactions. He sliowcc ie 
F»at advantages of such a speedy Issue of centio ofrlpg thfi M* W IQSCWS 
f ptum, a3 well as in introducing the coins of higher denominations. 
Mr. Yates concluded in these words:— .. , 
"If such a plan as that which I have now endeavoured to delineate shall be 
*i-[led, nine-tenths of the quantity of pieces, mid a far larger proportion of the 
•want of our present coinage, in both assigned and intrinsic value, will remain in 
.vcnlation, and will be known to a great extent by the same denominations. 1 Icncc 
/appears probable, that the prices both of labour and of commodities will undergo 
j le,i derangement than might have been expected ; for, although the same 
'dominations will be applied to some silver coins of a little lower value, yet the 
kpreciation occurring, at least in the most common cases, in equal proportion in 
fqvd to all objects and all transactions, it appears not unlikely that the disturbance 
endant on the change may be almost imperceptible.” 
J ‘ ^ ates ’ s communication is published at full length in the Assurance Magazine 
m Journ al of the Institute of Actuaries, No. XVIII. p. 146-151. 
MECHANICS. 
V" Telegraphic Communication between England and America. 
i( r jj By Frederick Hakijwell. 
P r °poscd to effect such a communication by employing a single 
lron ' v ‘ re sufficiently strong to be self-protective, and to be insulated 
;*rn. P^rcha or other non-conducting substances, covered with tarred hempen 
le readily ! a WI1 e > it was stated, might from its comparative lightness and flexibility 
»ou|d y fetched across tho Atlantic, and at a cost of £ 100,000. A single wire 
Stannic r • instancc °t least, be sufficient to supply the want of telegraphic 
• ^ultv tbe telegraph were kept iu constant work. He alluded to the 
l :rftu 8h an • • 1 d reccntl y been discovered in transmitting telegraphic signals 
V-ickly been,!- 6 d w ' re immerBp d in water, and to the means that had almost as 
8,ltm expert < l GVl8e ? for overcoming the unforeseen obstacle. He expressed a con- 
thev that Blloul(1 Other difllculties arise in prosecuting such an enter- 
°uld also be as readily vanquished. 
Tl ic J^‘ COnon f ca ^ Working of Steam Boilers. By John Chanter. 
^■Wa fo,°th? plailled t' le construction nf his furnace with moveable reciprocating 
' jf danse g re > P rpvp ntion of “ clinkers.” As a proof of the advantage of the use 
work fi tated that some of these furnneos which had been in 
■f ° nl y Six mnnrt, WO ^ ears vemfl,n >° good condition, . whilst ordinary furnace-bars 
* J .'e half the u i i^ e 4epth of coal on the bars need not, it was said, be 
"**!• Tables iii other furnaces; and there is consequently a saving 
a proof of this, and of other advantages, were appended. 
9 Ply~whecl lately erected at the Mersey Iron- Works, Liverpool. 
JP 1 * object of th' . Wili.iam Clay, Liverpool. 
usi Q ;i:h' el ,1 s r , e S ull de tile Bpeed of a large boiler-plate train of 
I,, ro j[. a °tioyance by breakin W * iee *’ aB ’ 8 generally done, which so often causes 
linear 'j Qtller worH^t^ 6 ' 0 IS , a certn ' n liinit to lb e speed at Which the rolls should 
e< l With the rolling ? u *^ Jer revolutions made by the rolls arc very few as 
g ot other descriptions of iron; and it was therefore neces- 
10 * 
