( 414 ) 



§ J 8. ^^llh/('S of pr\ of s('i'/('s T^. 



Ill (able XX (lie resiills of (he (le(eniiiiiii(ioiis luivc licen repre- 

 scii(cd ill (he same wav as in (able XII of ('omiii. N". 07''. The 

 (eiupcradires at wliieli (he ineasiireineii(s were made wei-e: — 182°. 74, 

 — il)5M(^, —204^.62, —212^1)1 and - 215°.1)4. In (al.lc; XX (lie 

 rednedoii (o (he s(aiidard (eiii]>ei-a(nres of (al>k' XII has been 

 {•arried oii(, I( was e(le('(ed bv in(erpohUi()n l)v iiieans of \irial coeffi- 

 cieids, whieli were derived in § J2 of Coiiini. N". 97^'. which enabled 

 Tis (0 abandon (he elabora(e method of § 8. The (•omi)ii(a(ion of 

 the (cmperadires took jilaee in (he same wav as in ('oiiim. X". 95^ 

 (Nov. J 906). They may be reduced to the normal hycb-ogen scale by 

 means of table XV 111 of Comm. X". 97^ (lAlarch 1907). 



§ 19. V/t/nrs i)f jir^ of .s't'/7>.v fV. 



If in the same way as in (he preceding § (he resul(s of table 

 XIX of Comm. N". 99" are reduced (o the standard temperalnre^ 

 the values of the adjoined table are ob(ained. For — 139°. 88 this 



