( 547 ) 



toil! poraf lire of' tlio wliolc Ixm-oiiics .02 .nid iii.ia I»' (lisrooardod, 

 os|>(M'i;iliv in (•(tiisidcralioii of llie fad Ilia! Ilic diircrciicc in Icinno- 

 ralin-(' hctwccii llic Jackcl and Hie snrronndinu' aliiiosplicrc as a 

 rule is less than 5" niid lliei'croi-c llic ovvnv made will ('(M-laiid\- Itc 

 sniailci-. 



Hence (»nl\ in xcrv ind'axoni-altlc cases llie en-oi' in tlie resnil 



1 



will lie lai'U'er lli.tn —t—- , and we nia\ exitecl tlial in most cases 



,)()()() • ' 



IJH^ eri(M' will nol exceed tjiis anioinil. 



'I'd Jnduc ol' the course of a nieasnrenieni I lia\ <• uixen in hiWIeJX 

 d». 54(i) llie e\|)erinienlal liunres of an adjnstenieni l\)\- llie delernii- 

 nalion ol" llie dexialion from the law ol" Ilovi.i', of the mixlnre of 

 0.2 oxvii'en with O.S carbon dioxide, ('oiiinni J contains the readin.U'S 

 (.1" lli(> le\'el (se(> (\iiiini. N". ()0 These Pfoc. 1 1 1 Sept. 29, IDOO p. I] I 2), 

 />' the ivadiiiiis of the cathetomcter. 



The \'()liinieiionietei' had beforehand been calibrateil with niercni-v 

 l)V Dr. ('. Z.vKKZi'.wsKi. lleJice we knew a( the same teniperalnre the 

 voliinies of the bnlbs /'.Yy^, measured between the middle marks on 

 the lilass screens /v/, and also tiie bores AVy.,, A7>,, /sA,,, I'Jh., El>^. 

 In the a)t|>aratns used (he mercurv conid not be read while it stood 

 in A7y,,, becanse owin.i;' to a former manipulation in the l)low-pi[)e the 

 bore at that ])lace was not perfectly cylindi'ical. There the sum of 

 (he \()lumes of the two neip,'hl)onrin,u- bulbs had been measured. 



To test this and also to determine the volume of Eh^ witii what 

 lies al)o\(^ it I have determined volunienometrically the relation of 

 the dilferent \(»lum(>s with dry air free from cai'bon dioxide. To 

 account for (he dexiation fi'om the law of Hovlf, 1 could make use 

 of coefticients of KamI'.kijniju Onnes'^) series: 



B 1 C 1 1) 1 E 1 F 1 



A A A A A 



put kindiv at my disposal, which accui-at(»ly repi'esent (o within' 

 0.2''/„ the condiu-t of air as indicated by .\M.\(rAT's experiments. The 

 three tirst coefficients are for '2iT V : 



Ai = 1.0788 



Ba — — 0.40495 X 10 -'^ 



C,( = 3.0178 X 10 ". 

 We tind for the I'elation of (he volumes T, and V^ which are 

 filled with the same (piantity of jL>as at the same temperature to 

 pressures p^ and //,_, t(» the first ap|)ro.\imation: 



1) Ouniiu. X". 71. Thc^c I'ruc. IK .luiK' :^'.». I'-'Ol. |,. !:>:,. 



30 



Proceedings Kuyul Acad. Amsterdam. Vul. VI. 



