xxviii report—1854. 
April the Chairman replied, stating that the Committee were willing to 
superintend the execution of any contract which the Board of Trade might 
make for the supply of such instruments, in accordance with the following 
resolution of the Committee :— 
27th March, 1854-, at a Meeting of the Kew Committee of the British 
Association, 
Resolved,— 
“That in all cases in which the Committee is called upon to assist 
either Her Majesty’s or other governments, in the supply of meteoro¬ 
logical instruments, it is to lie understood as a principle that the contract 
for such supply is to be between the government requiring the instru¬ 
ments and the maker furnishing the same, the contract price in all cases 
to cover the cost of verification at Kew.” 
A copy of the correspondence with the Board of Trade is attached to this 
Report. 
Barometers . Your Committee stated in their last year’s Report that in 
consequence of Lieut. Maury having requested their advice upon the best 
orm of a marine barometer, the subject was under consideration ; after haviug 
examined several forms of these instruments submitted for their considera¬ 
tion, your Committee selected one in which it is believed all the requisites 
tor mak.ng observations at sea will be found to have been obtained 
at a very moderate cost, combining convenience and accuracy in observing, 
With Simplicity and durability in its general construction. * ** 
I,,,I,, rf reat u "P orta . ncc as to ce, ’t»in conditions requisite in a good barometer 
ea“ s as 5 'r,v S'n ,lee t0 “’"V" ar,io " "** this instrumerif tested by'.ucli 
eo.“Litd l,v Mr A 1 ’, 1 !- co ' ,lmam ’ a " d .»"» «■»» effected by Mr. Welsh (a* 
t V * Adie, the nmker), in a voyact; to Lrith ami hark fn 
I 1 ' 6 “?r°“ "'i th , a illslr " mr "‘ further tested by 
trials will be seen hf ,he r"n r °“' Cl,annel Clauds: the result, of tbei 
Chairma,':- the ,oIlo ' vln S ^dressed by Mr. Welsh to the 
« „ “ Kew Observatory, March 25, 1854. 
mittee atTefr MeSTn* oTth^S ex P re8sed h y tUe Com ‘ 
steamer 1 Clarence ’ for Leith instant > ? sailed the same evening by the 
examining the action of three baroStew wide'bvhhf*’ Tk the P or P 08e of 
were all of the same conefruptmn »„,* i. • 11 , e nim. Ihcse barometers 
degrees, viz. in the proportions of five, tel^and fi|W„ COn - lra ? ed ln difl V re ? t 
for the tune occupied by the merourv in ,1 an ,, filteen nnnutes respectively 
first placed erect. y ascending to its proper level when 
com man dei^ of* th vessel, * ki n dly Tllowml^ u ° nbin ’ bat Mr * Turn ^ 
Ills mvn cabin, to which we had access during fK SU,peni1 the instruments iu 
As the weather in this passage ivastooe i 8 . ^greater part of the voyage, 
the barometers, especially witli remrd ti 1 ° a,,ow of a dlcid ed trial of 
^P» UbG ’ 7 , returned on ^ „f the mercury in 
which we had engaged a priva 3, On by lhe ‘Leith,’ in 
of ,l,ew ~’.- • ■ ZZ rr 2ss; s* 
