The Sun.
London, England, 1857-04-25 00:00:00

"Sir,—l am induced to intrude on your space
with a few re,tnarks relating to the article in your
paper of yesterday's date on the Atlantic telegraph
cable, inasmuch as some of your inferences are con-
trary to fact. 'You say that if by any means the
central conducting wire should become attenuated
its conducting power throughout its whole length
would be lowered in the same ratio. Such would
not be the case, as it is well known to any one con-
versant with the laws regulating the transmission
of electric currents through long conductors that
the interposition of several yards of a wire as small
as the 1-50th of an inch in a conductor of 1-16 wire
of some miles in extent will make so little difference
that if cannot b 3 detected by the most delicate in-
strument. It is only on increasing the smaller con-
ductor to 100 or more yards that it becomes appre-
ciable.

" I have no wish to detract from the merit of Mr.
Allen's invention in submarine ropes, but in my
opinion (and I have had some experience in tele-
graph matters) his plans will not be found practic-
able. The casing of the ordinary submarine wires
with iron is not only to give lateral strength, but
also to protect the core of gutta percha, or other
insulating material, from abrasion in lying down,
or from the action of the waves on the rocks, &c.,
and should a cable be constructed in the way you
recommend it will be almost impossible to submerge
it Without 3c..me injury to the comparatively soft
insulating covering. The lapping-of the coil round
the break-drum would be sufficient to cause the iron
core to cut through the indiarubber, or whatever
might be employed, and should such be the case
the mischief would be much greater than if a part
of the ordinary small conductor should be exposed.
" I have nut the slightest interest in the Atlantic
Telegraph Company, nor have I any motive for
preferring the plan adopted by them, but I 'know
that before they fixed upon this particular form
every possible experiment was tried with a view of
arriving at the. best arrangement, and I believe
they have dote so.
" I am, sir, your obedient servant,
" W. T. HENLEY, Telegraph Engineer.
" 46, St. John-street-road, April 23."

MARKET NEWS.— (This ' 'ay.)

COVENT GARDEN.

Only moderate supplies of fruit and vegetables were on
sale to-day, and the trade generally ruled steady, at last
week's quotations.

FRUIT.

Pineapples, per 1b.680d tolOs
Colones I do., ea. Os Od to Os Od
Grapes, per lb 12s Od to 20s
Foreign do Os Od to Os Od
Melons, each 3B Od to 5s Od
Peaches, p. 3s to Bsod

Filberts, per to is 4d
Cobs., p. 100 lbs. 140 a to —s
Almonds, p. lb. Os Od to Os Od
Walnuts, per 100 6d to is Od
Figs, per doz is to 3s Od
Strawberries, per

Nectarines, do. 2s Od to 8s Od
Apples, p. h. sv. 68 Od to 88 Od
Pears, per d0z....88 to lOs o,i
Oranges, per 100.5 s Od to 12s,
Lemons, p. doz. 18 Od to 28 Od'
Apricots,p. doz. 2sOd to Gs Od
Cherries, per lb. Os to Oa Od

~.Btl to ls

0unce......
Gooseberries, per
half sieve ... Os 0(1 to Os Od
Currants, p. do. Os Od to Os Od
Plums, per do. 2s 0:1 to 5s Od
Greengages, do. 4s Od to 7s Od
Raspberries, p. potl. Od to Od

VEGET.
Greens, p. doz. bun. 3 s to 336 d
Cabbages, per doz. is to is 6d
Savoy do., p. do. is Od to 2s (rd
Cauliflowers, do. I. s Od to 5s Od
Brocoli, p. bun. is 0.1 to is 6d
Potatoes, per ton 80s.to
New do., per do Osto 0
Peas, per quart ...9d to is Od
Turnips, por bunch 2d to 3d
Carrots, per bunch is to 3s
Cucumbers, each is to 2s 6d
Garlic, per lb 6d to Os i2d
Sorrel, per sieve Od to 0,
Spinach, p. d0...2s Od to 2s 6d
Brussels sprouts, per
half do 18 9(1 to 28 6d
Onions, p. bush 2s Gd to 5s Od
New do., per bunch 4d 'to 6d
French beaus, per
• 100
Leeks, por d 0......... 2d to 4d

'ABLEb.
Shallots, per lb Ga to 8d
Horsoraddish, p. bun. 2s to 5s
Parsley, per do. Gd to 8d
Celery, per do Os 9d to is 9d
Beet, per doz. is Od t 0124 Od
Parsnips, per do. is to 2s 6d
Small salad, p. pun. 2d to 3d
Mushrooms, p.ptl .Is3dtols 6d
Artichokes, each 4d to 8d
Lettuces, per score 6cl to 9d
Endive, per score ls Gcl to 4s
Radishes, p.doz. bun. 6d to is
Tomatoes, p. hf.sv. 4s to 6s Od
Walnuts per 100...0s 8d to is
Chillies, per 1001 s Od to ls 6d
Capsicums, per 1001 s Od to 2s
Rhubarb, p. bun. G:1 to is 3d
Asparagus, per 100 63 Od to 8s
Sea kail, per pun. is 61 to 3s
Turnip greens, per
bush is :3d to is Gd
D LEADENHALL.

NEWGATE AN

. Turkeys, 5s 01 to Ss Od ; Poults, 5s OA to is Od; Geese,
Oi 01 to 03 Od each ; Goslings, 6s Od to 9s Od ; Duck-
lings, 3s 0,1 to 4s hd ; tame rabbits, is Od to 2s Od each ;
wild do., 10d to is 01 ; Pigeons, 8d to 10d each ; large
surrey Fowls, Ss to 12s ; barn-door do., 5s Od to 8s ; Chick-
ens, 76(.0d to 10s Od per couple; Capons, Os Od to Os; Hares,
24 OA to 2s 6(1; Grouse, 2s 3d to 3s Od each ; Pheasants,
3s to 4s Od ; Partridges, is 9d to 2s 3d ; Woodcocks, 3s Od
to 03 Od ; Snipes, 9(1 to is 6d; Teal, is 3d to is 6d; Wild
Ducks, is 6d to 2s Od ; Widgeons, is to is 6d ; Plovers, is Od
to Is 6(1 each ; Guinea Fowls, 7s to Ss Od ; Roasting pigs. 5s
Od to 9s Od each. Ostend fresh butter, —s to —s Od ;
English do., is 21 to is 5d per lb. ; English eggs, 7s
to 8s ; French do., 5s Od to 6s Od per 120; Leverets, 3s Od
to 3s Gd each.