1918. ] The Fifth Indian Science Congress. CXXXVii 
the plant economy the original acid contents of the cell sap is by far the 
best calculated to further its growth and that the plant has within itself 
the means of regulating this a ie. to meet its daily requirements. It 
is sh that heating th ase extract does not result in its p ent 
estruction, as ha e y held so far, onl tempor 
inhibition. Similarly the effect of reducing agents is simply to suspend 
© oxidase activity for never to troy it irrecoverably 
Finally it has been show that the starch and otassium iodide reaction 
in char 
Effect of storage on some tanning materials.—By P. 
Sineu. 
This paper embodies the results of tannin — of a number o 
tannin ng materials kept under observation for so e years, showing that 
there is practically no détesioration } in the tannin omen of the materials 
examined, due to the effects of mere stor. orage. 
Factors for the estimation of gluten and a few sugges- 
tions taue tS the analysis of Ata and Flour.—By B. 
SASTR1. 
; lL A ee method fer the estimation of dry gluten from the 
amp m 
2. Tables showing results of analysis. 
3. Standards for the percentages of moisture and ash can be con- 
aise 
Foreign. starches and physical characteristics. 
The investigation of a water-proofing solution used in the 
manufacture of surgical limb-baths and of other matters 
connected with the process.—By H. B. DUNNICLIFF. 
The work was undertaken to investigate the causes of, and to to suggest 
remedies for certain defects which appe scdek th in the finished limb-baths 
tnade from paper, starch and a se pene ie solution 
h Prescriptions for the and the water-proofing solution 
dised ; 
that sam of c ercial ‘* copper carbonate” vary 
largely = composition (529% CU to 67%, CU). It ie atigoctel that the 
ad olution be made by ee a known amount of 
ith sodium oncionate. washing the precipitate by 
tho n dissolving it in acippnie ‘olation. A table is a 
wing the degree of dilution required for 
Proofing gravities. Cotton wool is dissolved in ‘this to make the wie 
With j solution. teow ae should be allowed to stand for two days 
tines saad sha 
the § © paper used shouts contain oe a a cellulose ’’ to make 
Sevcning of pa aper by it a process of w « 
of Pee of bazar cotton Sie many inure have been tried, but a 
de id tesidue and none is ei ere h soluble toe the porpose. 
@Dsorbent cotton wools vers use 
ete. acy tokens for the preparation of the wratersproolilg solution, 
7, om baza: materials are given. 
o test the efficiency of “the solutions, ae ee of ogee 
re prepared as finally se mp 
board, made from the papers sapplied, pram fice and polished with the 
