men of invention and industry-第21节
按键盘上方向键 ← 或 → 可快速上下翻页,按键盘上的 Enter 键可回到本书目录页,按键盘上方向键 ↑ 可回到本页顶部!
————未阅读完?加入书签已便下次继续阅读!
during the voyage of four months; on its return to Portsmouth on
March 26th; 1762; it was found (after allowing for the rate of
gain or loss) to have erred only one minute fifty…four and a half
seconds。 In the latitude of Portsmouth this only amounted to
eighteen geographical miles; whereas the Act had awarded that the
prize should be given where the longitude was determined within
the distance of thirty geographical miles。 One would have
thought that Harrison was now clearly entitled to his reward of
20;000L。
Not at all! The delays interposed by Government are long and
tedious; and sometimes insufferable。 Harrison had accomplished
more than was needful to obtain the highest reward which the
Board of Longitude had publicly offered。 But they would not
certify that he had won the prize。 On the contrary; they started
numerous objections; and continued for years to subject him to
vexatious delays and disappointments。 They pleaded that the
previous determination of the longitude of Jamaica by
astronomical observation was unsatisfactory; that there was no
proof of the chronometer having maintained a uniform rate during
the voyage; and on the 17th of August; 1762; they passed a
resolution; stating that they 〃were of opinion that the
experiments made of the watch had not been sufficient to
determine the longitude at sea。〃
It was accordingly necessary for Harrison to petition Parliament
on the subject。 Three reigns had come and gone since the Act of
Parliament offering the reward had been passed。 Anne had died;
George I。 and George II。 had reigned and died; and now; in the
reign of George III。thirty…five years after Harrison had begun
his labours; and after he had constructed four several marine
chronometers; each of which was entitled to win the full
prize;an Act of Parliament was passed enabling the inventor to
obtain the sum of 5000L。 as part of the reward。 But the
Commissioners still hesitated。 They differed about the tempering
of the springs。 They must have another trial of the timekeeper;
or anything with which to put off a settlement of the claim。
Harrison was ready for any further number of trials; and in the
meantime the Commissioners merely paid him a further sum on
account。
Two more dreary years passed。 Nothing was done in 1763 except a
quantity of interminable talk at the Board of Commissioners。 At
length; on the 28th of March; 1764; Harrison's son again departed
with the timekeeper on board the ship Tartar for Barbadoes。 He
returned in about four months; during which time the instrument
enabled the longitude to be ascertained within ten miles; or
one…third of the required geographical distance。 Harrison
memorialised the Commissioners again and again; in order that he
might obtain the reward publicly offered by the Government。
At length the Commissioners could no longer conceal the truth。
In September;1764; they virtually recognised Harrison's claim by
paying him 1000L。 on account; and; on the 9th of February;1765;
they passed a resolution setting forth that they were
〃unanimously of opinion that the said timekeeper has kept its
time with sufficient correctness; without losing its longitude in
the voyage from Portsmouth to Barbadoes beyond the nearest limit
required by the Act l2th of Queen Anne; but even considerably
within the same。〃 Yet they would not give Harrison the necessary
certificate; though they were of opinion that he was entitled to
be paid the full reward!
It is pleasant to contrast the generous conduct of the King of
Sardinia with the procrastinating and illiberal spirit which
Harrison met with in his own country。 During the same year in
which the above resolution was passed; the Sardinian minister
ordered four of Harrison's timekeepers at the price of 1000L。
each; at the special instance of the King of Sardinia 〃as an
acknowledgement of Mr。 Harrison's ingenuity; and as some
recompense for the time spent by him for the general good of
mankind。〃 This grateful attention was all the more praiseworthy;
as Sardinia could not in any way be regarded as a great maritime
power。
Harrison was now becoming old and feeble。 He had attained the
age of seventy…four。 He had spent forty long years in working
out his invention。 He was losing his eyesight; and could not
afford to wait much longer。 Still he had to wait。
〃Full little knowest thou; who hast not tried;
What hell it is in suing long to bide;
To lose good days; that might be better spent;
To waste long nights in pensive discontent;
To spend to…day; to be put back to…morrow;
To feed on hope; to pine with fear and sorrow。〃
But Harrison had not lost his spirit。 On May 30th; 1765; he
addressed another remonstrance to the Board; containing much
stronger language than he had yet used。 〃I cannot help
thinking;〃 he said; 〃that I am extremely ill…used by gentlemen
from whom I might have expected a different treatment; for; if
the Act of the l2th of Queen Anne be deficient; why have I so
long been encouraged under it; in order to bring my invention to
perfection? And; after the completion; why was my son sent twice
to the West Indies? Had it been said to my son; when he received
the last instruction; 'There will; in case you succeed; be a new
Act on your return; in order to lay you under new restrictions;
which were not thought of in the Act of the l2th of Queen Anne;'
I say; had this been the case; I might have expected some such
treatment as that I now meet with。
〃It must be owned that my case is very hard; but I hope I am the
first; and for my country's sake I hope I shall be the last; to
suffer by pinning my faith upon an English Act of Parliament。
Had I received my just rewardfor certainly it may be so called
after forty years' close application of the talent which it has
pleased God to give methen my invention would have taken the
course which all improvements in this world do; that is; I must
have instructed workmen in its principles and execution; which I
should have been glad of an opportunity of doing。 But how widely
different this is from what is now proposed; viz。; for me to
instruct people that I know nothing of; and such as may know
nothing of mechanics; and; if I do not make them understand to
their satisfaction; I may then have nothing!
〃Hard fate indeed to me; but still harder to the world; which may
be deprived of this my invention; which must be the case; except
by my open and free manner in describing all the principles of it
to gentlemen and noblemen who almost at all times have had free
recourse to my instruments。 And if any of these workmen have
been so ingenious as to have got my invention; how far you may
please to reward them for their piracy must be left for you to
determine; and I must set myself down in old age; and thank God I
can be more easy in that I have the conquest; and though I have
no reward; than if I had come short of the matter and by some
delusion had the reward!〃
The Right Honourable the Earl of Egmont was in the chair of the
Board of Longitude on the day when this letter was readJune 13;
1765。 The Commissioners were somewhat startled by the tone which
the inventor had taken。 Indeed; they were rather angry。 Mr。
Harrison; who was in waiting; was called in。 After some rather
hot speaking; and after a proposal was made to Harrison which he
said he would decline to accede to 〃so long as a drop of English
blood remained in his body;〃 he left the room。 Matters were at
length arranged。 The Act of Parliament (5 Geo。 III。 cap。 20)
awarded him; upon a full discovery of the principles of his
time…keeper; the payment of such a sum; as with the 2500L。 he had
already received; would make one half of the reward; and the
remaining half was to be paid when other chronometers had been
made after his design; and their capabilities fully proved。 He
was also required to assign his four chronometersone of which
was styled a watchto the use of the public。
Harrison at once proceeded to give full explanations of the
principles of his chronometer to Dr。 Maskelyne; and six other
gentlemen; who had been appointed to receive them。 He took his
timekeeper to pieces in their presence; and deposited in their
hands correct drawings of the same; with the parts; so that other
skilful makers might construct similar chronometers on the same
principles。 Indeed; there was no difficulty in making them;
after his explanations and drawings had been published。 An exact
copy of his last watch was made by the ingenious Mr。 Kendal; and
was used by Captain Cook in his three years' circumnavigation of
the world; to his perfect satisfaction。
England had already inaugurated that series of scientific
expeditions which were to prove so fruitful of results; and to
raise her naval reputation to so great a height。 In these
expeditions; the officers; the sailors; and th