hd DKNSiriKS <>l "V\'il \ \M> m DIKHiKN. 



e 



o 



e 



t -^ i E r 



x " ■■ ■- £ 



V ='B a-TliawV ~ to 



I pe . aa 3 y - , i ■■ 





^^ u 



i r. °^ : Z « ^ .6 



^•c 



I NDVcmlicr .'.^ 231.9 22.9" 59.6 55.0 36.5 43-2S74 43 .?4«9 T^S-lo 37''M .0H9861 



2O J30.7 i«.o 60,0 56.3 3O.5 4.? 2574 4,V.^502 72« '3 37.^>4 .0K9S77 



3 •' 29 228.5 23.5 60.7 55.9 3<'-9 4.V349« 4.i-349« 7230S 3-704« .089870 



.( I)c. .inluT 2 240.7 19.0 57.0 533 36.9 4.?-2574 4.V.3472 726.42 3.7217 .0898O7 



5 " 7 2406 19.8 57.0 53.1 36.5 43.2574 433470 72»o5 37289 .089839 



6 " 9 23"-3 20-7 598 53-6 365 432574 43349S r*^^'' 3-7219 089874 



7 " 12 239.5 19.5 57.4 .S3<' 365 432574 43-3475 725-30 3-7'5« .089864 



8 " 14 237.3 22.7 58.0 53,5 36.5 43-2574 43-3474 727-7 « 3-729° .089883 



9 " iS 234.7 22.9 58.8 54.3 36.5 432574 43-3482 722.54 3-7004 .089830 



10 " 21 261.7 22. r 50.7 46.9 36.5 43-2574 43-3408 722.93 3-7037 -089877 



11 " 27 240.6 19.3 57.0 53.2 36.5 43-2574 43-347" 721-90 3-6979 089851 



If \Vf ilici'c.'isc till' lih'.lll 1>\ line t liiil \ I l|(M|s.-ni,|( li,* we sli;ill li,-ivc 



l>i, = .U898(;f; ± ((.(KifKMi;; 4. 



.'{.'{. — llVI)i:ofiK\. IINAI. IIKSII.I' 101: ITS HKN'SITY. 



'I'lic irsults of livi' st'i'ieH of (It'tenniiiutioiis nl' tlic dfiisitv of liydinircn ;it iici- 

 iiial liiii|ici;itiirc iiinl |iicssiiri' ;tl llic sea level in l;ilituilc l.'t" ai't' : 



Scries I., I) .0H9938 nr. 



Scries II., 1),, =089970 gr. 

 Scries III.. D, -.089886 ± .0000049 gr. 

 Scries 1\ ., 1)|, ^.089880 i .0000088 gr. 

 Series V , Di, : -.089866 ± .0000034 ^r. 



It is |pcli(-\ cd ih.ii (lie rewiilts ol' Mi^'inH Hrst ami second aw. afl'ecU'd wiili -oine 

 soiirci; (d' coiistiiiiL ciioi'. Il is su|)|M)Sfd that this is due to the I'ldraiicc <d' iiici- 

 ciirial vapor into tht- i^hilics in whiidi the liydrom'n is wci^iicd. 'I'lu- ivniainin;.^ 

 sciirs of (h'U'i-niinatioiis ate fifi- fimn at least this source id' endi- ; until fnither liijtilt 

 on the inalter is seemed, tliey t^ivc the best value of the ilensit\ i>f li\ilioireu 

 \\ liieh I e.in >d)tain. No u;idiind for idefeienee of one I'esnit o\fi- llieothcrs IS 

 Isimw n e\ee|il wlial is to lie i nil Tied fmni t he inai^nitiidi' of the di-\ i;itit'n> IVoin the 

 ine.in \;dne in each series, so that lhe\ rn;iy In- u:i\en wci^ditsas intlic-iled l)y the 

 |ir(d)alde errors. We then ha\c as a linal \.-dne : 



I),, = .08!»87;5 ,i,'f. ± .(Ml(»(Hi-_'7. 

 * Sec MDlf, pane 28. 



