,V.)S 



it remain-- suspended in it for a lon^ time, and ^ives it the appearance 

 of a milkv liijuid. lint, besides this, lime i^ direi-tlv soluble in water, 

 not to any considerable extent, but still in such a <|tiantitv that I'nnc 

 n-iit- r is precipitated by carbonic anhydride, and has clearly elis- 

 tinguishable alkaline properties. One part of lime requires at the 

 ordinary temperature about ^00 parts of water for solution. At IGU 

 it require- about 1~>OU parts of water, and therefore lime-water 

 becomes i.-loudv when boiled. If lime-water be evaporated in a 

 vacuum, then calcium hydroxide separates in six-sided crystals." If 

 lime-water be mixed with hvdro^en peroxide then minute crystals of 

 C'il<'iniii j" /".//'/', ( 'aO.,.s 1 1 .,( ) ? separate ; this compound is verv un- 

 stable 1 and. like barium peroxide, is decomposed by heal. Lime, as a 

 powerful base, combines with all acids, and in this re-pee-t presents a 

 transition from the true alkalis to magnesia. .Manv of the salts of 

 calcium (the carbonate, phosphate, borate, and oxalate) are insoluble 

 in water ; besides which the sulphate is onlv sparingly soluble in 

 water. A- a more energetic base than mau'iu'sia, lime forms salts. 

 ('aX.,. which are distinguished by their constancy in comparison with, 

 the salt-. Mu'X., : neither does lime so easily form basic and double 

 salt s as ina u'i iesia. 



Ills' as '.xyo-eii does not combine with hvdroijvn unless aided by a 

 rise of temperature, so also /////< <l< x m,f iih*<>rl> <//'// <'(trt>onic a ,/]/ //'/ r'i</'- 

 n/ t'ii' <>//} i n<i i'i/ t> in i rut a r< . 'This was already known bv Scheele, and 

 1'rof. Sd uiiachenko showed that there is no absorption even at .">GO~. 

 Ii onlv proceeds at a red heat.' 1 ' and then the absorption only leads to 



(ili . urcd the I n-paivnt l.ri-'hl crystals of calcium hydroxide 



n liy.lr, ilii- I'ortlandi cenifiit. 



'- T; ' - ' ' ' In Ml in- l>nirj- t In- -iili-tan.-f into l hat state of internal moxcinent which 

 ; n I ion. One would think" 1 hat liy the act of healing not <>nly is till! 



i ' . - I' tin- nn ili-eiile--, altered ._ an -ra 1 1 \ diminished I, not 



i e i nee, 



. r- i-liMiiie anhyilriili a il il... ninl.-r tin- action of In-at. l-'or thecom- 



I r, In oi < i'finieal jiheiinmeiia it i eM-ee<lin;jly n -efnl to dearly see tlii-, parallelism. 



!',-,:. lion-ol calcium chloride 



. .] |.-i i.l .nit.- I'l.im dilute, and of calc -par t'r IrmiL;, solutions, 



I, 1 from (hi point l \ i. v, . \ , ara lite is always Inrnu-il from ]i,,t, 



Ih..)', . dilnti ,vitli water act like heal. Tin- following experiment of 



K ; I ieiilarh ' t nil'! ; \ i- in 1 1 ' . . \nh Vilnius i perfect ly <h'\ ' harinni 



.,-. :ded ' t \viLh monohydrated -nlplniric n.-id. H : S( )., (coiitainin- neither freo 



' ..,!i-'.|e. SO-i. llnl diredlv an incandeM-ent olijecl or a moist siiK-tance is 



r i : t.ict \\ ;th tin- me.tiir.- a \ iol.-nl i-. act ion immediately begins i it is essen- 



