Crystallography, of melezitose

Crystallography, of melezitose, II, 14 Cuto-cellulose, III, 187 Cyanohydrins, in synthesis of higher-C sugars, I, 1-36, 37, 38 Cyclization, of hexose derivatives, III, 53 Cycloamyloses, III, 254 305 V, 266 Cyclohexane, 1,3-diamino-2,4,5,6-tetra-hydroxy-. See Streptamine. 

The older data as to the crystallography of the trisaccharide melezitose are not only incomplete but contradictory. Villiers described it as monoclinic, bounded by a prism, m, the base p, and the side pinacoid he obtained the angles g1-.m = 136° 38 and m p = 92° 40. On the other hand Alekhine8 found it to be rhombic, his crystals showing front and side pinacoids, o and a, prism, m, and front and side domes, od and ga, although he recorded no measurements at all. In both cases the dihydrate is supposed to have been represented, but no information has been available to indicate whether this was a case of dimorphism or whether the two authors were in fact not dealing with the same substance. 

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