CONTENTS xi PAGE Lead arsenate—Moisture—Lead oxide—Total arsenic—Water- soluble arsenic oxide—Total arsenous oxide. Calcium arsenate—Total arsenic. Lime-sulphur solutions—Total sulphur—Sulphide sulphur—Total calcium. Nicotine insecticides—Determination of nicotine. Bordeaux mixture—Moisture—Carbon dioxide—Copper. Soap emulsions—Moisture in soap. Chlor picrin and the poison gases. TABLE OF LOGARITHMS AND ANTILOGAKITHMS............310 TABLE OF ATOMIC WEIGHTS.............Inside back cover. INDEX.............................317