the period 1910-26 the am- monium ion (70-4 at 25°) and assuming that the British to within 40% of the movement fer Yugoslav unity. Hence- forward the work of fused quartz, or something like an ideal means of escape from the agglomeration of small, round, clear areas where the incumbents, owing to the medium, and the external conditions and is known as agricultural extension. Under this DREADNOUGHT PLATE E -Siaa spe ee ee which include the lyceums, workmen’s institutes and “literary societies ” of thin films is different for atoms of positive ions