AMNH LIBRARY 



scyExcyi'GO-ss//' 



00164818 



JOHN J. GRIFFIN & SONS, Ltd., 



Chemical, Fhilosophicai, and Photographic lustrument Maicers,! 



MAKERS TO THE ADMIRALTY. WAR DEPARTMENT, INDIA AND COLONIAL GOVERNMENTS. 



A NEW DOUBLE SURFACE CONDENSER. 



(Cribb's Paieiit.) 



*^'^"^'•l 



Li, ^^=J SMALL SIZE. 



SMALL WEIGHT. 



Efficiency equal to .1 



LIEBIG CONDENSER 



5 



'I'iiiics it> .Size. 



Invaluable in '^- 



a Laboratory 



5^^ I'liU (iestriplioit and par/utilart 

 upon appKcalion. 



^ 



The Hiuoinelcr ihal all iIil- Wdilit lia.s Iwen wailjng ti'i, and llit- only Aneroid 

 lliat can l)t [)iu in action when rc(|iiiied, ami " put uul i»f fjvai'" when it i.< nut wanted 

 for ust, and which, when lliiown nUl of- acti(rn, is, alisolulely iniptrviou.s lo the 

 influence of variations in atmospheric pressiire. ''Travellers and Surveyors will now 

 . able' lu ascertain correct altitudes owinK to the niarvcllnus accuracy of this 

 Insti-umenl, which is de.scrilied at length hy Mr. Whv^ii'KK, the distinguished Alpine 

 clintlier. in the Times of Dccenilier 17th, 1S9.S. In 65 reading.- t.-rken lietween 1,227 

 and 10.2S9 f(!et alnive the .sea, I lie me.in error :i.scerlained liy couipari.son with the 

 .Menurial Baninieter Hxs never .so nuu:h as O. I ofanilich. He .says: " ICMraordinarx 

 re-ull> may lie olitailied from WatUin's Mountain Aneroid in ob.serva lions mad ' 

 aliiiuile, and iji determining difl'ererices of level." 



I ' vontl doubt a wonderful instrument. ' i.\:c. (I'ress.) 



It is made in Aluminium for lightness, in either 3 in. or 41 in. sizes, with Sling Leather 

 Case, and supplied at the following' Prices : — 



Scale to .5,000 f!., £5 5s. ; lo 10,00(1 (!,, £5 10s. ; to 1,5.000 f(., £5 15s. : lo 20,000 fl., £6. 



i 



Genaral View of Apparatus Sftcl.oii of Co.idonser 



20=26, SARDINIA STREET, LINCOLN'S INN FIELDS, LONDON, W.C. 



JAMES J. HICKS, 8,9,&io, Hatton Garden, London, 



SCIENTIFIC INSTRUMENT MAKER TO THE WAR OFFICE, 

 INDIA OFFICE. ADMIRALTY, &c. 



I~ .Sum M AKi.i; I'l I III, .N'r.u I'aikm 



''Watkin'' Mountain Aneroid Barometen 



Lai^ivn : Hrinteil b> the Botolph Pkkmi* Limiu'.h, Swc«diu<"J Court. Bi^^iiop^uati- Street, ti.C ; and Mtddle.HCx Stivct, E. 



