2S 



On the Souiuh of the Gases, 



3 C _ _i 



;o c; c — •-- O O T^ rH th T-( c-3 :■: •* •* 



t-- e-: o ;2 — « o ^ o 03 o -o p3 O 



C-. — X ^ r. C; CD 3 H C- r- C C^ "' 



•O CO CJ c- CO 



-f o 4 c-/ (N. o'j "-^ 



<^ O 'O 'O 



O "O " 03 O l>- O -O 



o c: o = . 



•— ' CJ 3 ■ 



-^^-1 o • 



O CJ r^ 3 O 3 C S CO O N- -n O t^ JO '.O 



C CC -O - ~ O -O C CO C ■- CM O 'O CO t-- 



CO' — -v o '0 :^' o CO c :c ^ ■'. -< co co 



"0 -0 — r 3 1-- -c o CO 'O o' 'o o C; t-- T< 



O •£• C: — -J CO -r- ..-J CO CO 'O X CO ~ CI -r-i 



C-. O C — O — ' ~' O' i-O CO CO CO O CO i~ X 



O <-■— — ?■;:' rf o-i « c c< w c:' CN c c>/ 





C ^ c .;: =c 



~ -t: cj ^ T- C 



>-. - -■-— ' JC'r: 

 ~ r p »-i H .- 



- ^ .5 < ^ Z 



uO 





In comparing the above results in column 4, it will be ob- 

 served, that the Notes therein fall in three different Octaves, 

 marked with small and cajntal Roman and with ca])ital Italic 

 Letters, as d, C and B. That Hydrogen yields a sound, very 

 near an Octave higher than that from Azote, diflfering less there- 

 from than 1 IS, and would perhaps prove exactly an Eighth, in 

 a more exact comparison by means of the Beats: — that Oxijgeii 

 ir, still nearer (differing less than ^X) a major Semitone (S, see 

 p,\ate V. in vol. xxviii.) below ^zote : and this last being ex- 

 trcmielvnear (almost within ^2) to a minor Tliird above Chlorine. 

 — Nitrous oxide is very near a major Third belov/ common ylir,8cQ. 

 The above was written long ago, soon after the a|3])carance 

 of ^Uie Experiments In Mr. Nicholson's Jcnnnal, but wishing to 

 revi 56 the calculations, it was laid aside for others engagements 

 until now. I am, sir. 



Your obedient servant, 

 AVcst'.ninacr, Jan. 13, 1815. JoHN Faricv Sen. 



Vill. Bio^ 



