Summary 1. The chloride, bromide and iodide forms of aldehydd-galactose hexaacetate 1- halide have been synthesized in crystalline form. It is pointed out that these substances are the open chain analogs of the cyclic acetohalogen sugars. 2. Akiehydo-&glucose heptaacetate and alde-hydo-1-arabinose hexaacetate have been synthesized in pure crystalline form. It is pointed out that these compounds may be expected to be formed in ...