141 



each in"', emcnt. All hough the oul 



must remain constant, the ure in the tubing \\ ill 



to the 'ii Bolutioi I I 



Ti rring i >ults to an animal blood 



lowered by hemorrhage, it has been fou 

 taining a Buffieienl amount of gum tin i" i 



ity aboul equal to that of blood, are injected, th< 

 pressure in re I as well as ii would hi n had blood itself i 



jected A 7 per cenl Bolution of gum acacia almosl fulfi 

 iin-n ts, but unfortunately tliis Bolution » • » » i » t -- 1 i 1 1 -^ a slightl} mount 



of calcium than it is safe to inject into ai 

 may. however, be removed l>. i itly neutralizing 

 sodium hydroxide, neutral red being used ;^ an indie 

 calcium becomes precipitated as phosphate. The mucilafi 

 Pharmacopeia, ili!ut<'<l five times \\ith water, makes ~ 

 linn of gum acacia. A 6 per cenl Bolution of gelal 



to 100 l es a viscosity similar to that of 1>I 1, but on i 



the possible presence of tetanus Bpores such solutions m i 



fully sterilized before injection, and the pi 



a decrease in viscosity. The injection quantil 



solutions equal to thai of blood lost by a hemorrh; a 



the blood pressure bach to its original height and hold it I 



hour or so. 



Viscosity is. 1 > ••, qo1 the only property 

 which their desirab t depends, 'ri- 

 als) iii.s into play. By injecting saline Bolution containin 



amount of a colloid bucI rch, which g 



vise '-lit ha osmotic pressure bl 1 



temporarily recovers after transfusion, does not malntaii 

 the same way as w ith solutions containing gum i l 



between a Btarch solution ami i gum o 



moti.e pressure, the eff< w hicl 



retion of urine, as can bi 

 ureters during the injection into anil 



alon • of saline containing tin K w 



first two fluids diun produced, but not with tl 



i that the osmotic ; 

 of v rom the blood into the urin 



incut of thia pn on tin- bh 



counteract the filtration pn by which the ur 



Although the urinary ir w ill 



