Memoirs presented to the Cambridge philosophical society on the occasion of the jubilee of Sir George Gabriel Stokes, bart., Hon. LL. D., Hon. SC. D., Lucasian professor.

(Cabriïàge L>/iiosphil Transc;tions, Vla. X /` L1, Plates 15, 16.
PLATE 15,
Absor options 'byL solution of didy.vni.tn sulphate, cold aund ltot, in two decrees of concentrations( Thel
t1tbi'Jci' t.ioti', w.( it It, s' tur ticed soi.ti tlin { at )(3 C,}
Ô i ~ C: - Ln o
stronger solution cf Di( S0 )3
i,.,< i-: - li_-~ 38 min. th ick, at 23& C
slinee rsolant ioni and saelet
thickiiess, at 90~ C.
half-strengt.h solution
half-streingth solution
4 ~ ~~:1:i-~.-::.:'-Iii1-:1~-:::::1-:~76 in. t.nn ick, at 92:: C.
ThLe oesion cf tae itttil dtsorptio-n. iet ttc e mai-e rtlrarinitlc einil ti oft spec-trunt, aJd ut înercascd
dii.ffiîsnerss (ni iho thié bad. i t thé li`nte9, lboi thte rise of' telltcraLture is plainlr secin ini these pi htoroapits
]PLLATE 16.
Ai.sortptin'is by s> i-otlit of c ritli chloridic, teuttrl al t aciut i tiwo deg-res of concaetir ation; thle
Stroii)ir - I.icttîa l. tml:ti.n liavinur tj'' g76 o 'îis of th, cli.l.oideto to e litre, and tle acid solttiotn ha-vin —
tbe:ides an:). ai:mo.t of h.ydroci'.lori acid (.iivat lenrtt to the amount of 'fnelutral salt.
o- -i c0 t- ~ t' hstT stronger neutral solution
38 ramo, thick
st longer acid solut io i
389 rit. thick
one3 third strenigtlh neutral
solution, 152'5 mma, thick
1omet4hird strengths acid
solîufaon, i 152'5 oins. thick
(TVite tliksesi ss tiof t l.sorbetit, ss ollutionu s is.(ott prO)îOttiofnca to the diltIticons, so) ttatt ttihe atbsorpttiots.
of itgures 3 c atd 4 a tre pro-ici d by ae qulantity ofi sait ie-third greater than that which t,gt f igtlre'es
anlld t, whic.. makes tii iba.nds of 3 aind 4 strongt'er.
Tr itect of the itaci i s telofHs tt extend tîl. génerttal alsorpititîtou ts t thé moret.or 't-reainible edit I i f tule
spectt'tItn`.