... development of the plant . When ammonium salts , on the other hand , are used , an acid substratum is produced , and this needs neutralising by the presence of calcium carbonate , for example ... ANNUAL REPORTS ON THE PROGRESS OF CHEMISTRY .

... annually and , therefore , it will be given only a rather cursory treatment here . The study of organo- metallic compounds remains somewhat remote from the rest of inorganic photo- chemistry . It relies heavily upon cryogenic methods3 ...