1921.} The Eighth Indian Science Congress. CXXxXi 
of either fructose or both pinenee and fructose. The modification pro- 
posed is free aps these defec 
3. Cl ore t factor for ig ieceaion of cane sugar has been redeter- 
mined for mercury arc lamp light for concentrations up to 15 per 
cent. The pr ths obtained varies Ahi 142°55 to 143°0. 
Condensation of | : 3- Diketohydrindene with Aldehydes. 
—By A. K. Das and 8. C. CHatTEeRsEn. 
e paper describes some new products obtained from diketohy- 
ee and aldehydes with dry hydrogen chloride as conden nsing agent. 
The substances separate in a very pure form and the ield is quanti- 
tative. It is suggested that as this process is capable of gene eral appli- 
n es 
temperature, but then the tendency appear o be more towards the 
condensation of two molecules of disda-deintions gee one of the 
aldehyde. 
SU esuamey, sonnet S. B. Durr and A. C. 
The paper records the preliminary results of an investigation under- 
taken with a view to prepare azines by the condensation of substituted 
phenanthraquinones wi ith 1:2-naphthalenediamine in the hope that 
the azines so obtained will have interesting dyeing properties. The 
following phenanthra-naphthazines have been described 2: 7-and 4:5 
dinitro, 2 and 4-mono-nitro, 2: 7-dibromo, 5- bromo-4-nitro, bromo-dinitro, 
dibromo-nitro, 2: 7-and 4: 5-diamino, and 4-amino, 2: 7-and 4:5 
pan, Saag 2. cand 4-hydroxy, 2: ; a anilino, F-anilino-Lnitro, dinitro-- 
ino, phenant 5-sulphonic acid deri- 
Pativea of 2: 7-diamino, 2-amino, mead 2: 7- acai pharantbra-naphtha 
zines and naphtho flavindulin 
The nitro and bro sitet owing to their eeeeeseyi in ordinary 
not or The h 
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Ee obs of organo- ee compounds without the 
e of ether.—By P. 
Tscheliuzeft clas organo-magnesium compounds sg stir ether 
by using tertiary amines as catalysts, the amines forming at first tetra- 
Se or -aryl compounds which react with magnesium to form ee 
sium compounds liberating the free amines. his paper it has 
shown that ounds m in neutral 
solv by the use of trialkyl-sulphoni dides as ca _ For 
example, using minute quantities of sheng cy ag um iodide a: 
magnesium compounds have been obtain ned with methyl, ethy!, ney 
and iso-amyl! iodi in feces ‘boltey analogous to that 
iso-butyl an my des 
observed in the case of tertiary amin 
