V i Differeiitial Systematies: WVilliam H. Womble 315 _ _ Technical Papers Contaminating Bacteria in Plant Tumor Tissues: William J. Robbins and Annette Hervey . ................................ 322 |k. The Isolation of Histoplasma Capsulatum from Soil in an Unused Silo: J. T. Grayston, C. G. Loosli, and E. R. Alexander . ............... .. 32.3 Differential Effects of Cerebellar Anterior Lobe ...

Summarv. Ethanolamine is readily metabolized by oat, pea, wheat, apple and carrot tissue preparations. Ethanolamine-1,2 14C was incorporated into the lipid fraction, and 14C activity was distributed in the organic acid, sugar, acid volatile, carbon dioxide and insoluble residule fractions. The distribution varied with the particular tissue. Incorporation into the lipid fraction occurred in tiss...

Factors affecting the ice nucleation temperature of plants and plant tissues were examined. The mass of a sample had a marked effect on ice nucleation temperature. Small tissue samples supercooled to -10 degrees C and were not accurate predictors of the nucleation temperature of intact plants in either laboratory or field experiments. This effect was not unique to plant tissues and was observed...

1. The polysaccharide compositions of the cell walls of sycamore cambium and sycamore callus tissue have been analysed and found to be directly comparable. 2. Electrophoretic analyses of the whole pectins prepared from actively growing callus and cambial tissue have shown that these preparations contain, in addition to the neutral and weakly acidic components present in apple fruit, a strongly ...