I ..I 



be drained off by holloa needles, and it i 



of the blood to another, neither of which pro 



if imbibition were th< tial Factor eon< I 



;i «_r.-i i t i->t this hypothesis should be demanded, il might 



utter failure of the therapeutic measure 



are recommended to combal the edema. 



Action of Electrolytes on Colloids apaii 

 pressure . It has been stated above that the bich a « - * ► 1 1 « » 



particle assumes may 1"' neutralized by a charj 



ried by an ion present in the die □ medium Tl lion 



of the electric chai - 3 coagulation of the Busp 



the emulsoids. Of the positive and negati which 



trolytes dissociate, the one producing tl gulation which 



opposite in sign to the electric charge of the colloidal 



A quantity of electrolyte which is capable of produ 

 cipitation when added all at once to suspei soida ill 1><- 

 added in Bmall quantities al a time. This phenom< hich 



known to be exhibited when toxins ;m<l antitoxins are n 

 probably owing to the fad that precipitation depends on inequality 

 irregular distribution of electric charges, a condition which b< 



ablished when the electrolyte is suddenly added, bul 

 is gradually added. The particles in the latter ease becom< 

 acclimated to the electric charges introduced by tl lition 



electrolyti 



Proteins as Colloids. The most prominent colloids in tl t bio 



chemistry are the proteins. On account • 

 however, pertain factors intervene which 

 their behavior very difficult. As we shall Bee later, pr< 

 up of combinations of amino acids, each of whicl MI 



and acid groups COOH . The various amino aci 

 in protein by il • I OOH of one uniting with the Ml r, with 



the elimination of water thus CO OH II !1N xn 



r< N >ll groups arc left oncombined A 

 of these oncombined radicles, the prot< 

 will exhibit faintly acid or basic or neutral 

 example, a sail will be formed by union with th< Ml 

 dissociate into the anion of the acid at 

 with alkalies union will occur with thi ' ' " ' : : 

 dissociating will form a small cation ■ 



complex anion. We maj the 

 posil i\ e or a negath e elect ri 



