PART I - APPARATUS AND PRINCIPLES USED IN MICRODIFFUSION ANALYSIS - II. A STANDARD MICRO DIFFUSION APPARATUS OR 'UNIT' - III. FACTORS INFLUENCING THE ABSORPTION RATE FROM OUTER TO INNER CHAMBER WITH SPECIAL REFERENCE TO AMMONIA - IV. GENERAL PRINCIPLES GOVERNING THE ABSORPTION TIME IN MICRO DIFFUSION ANALYSIS - V. PIPETTES (SUITABLE FOR USE WITH THE STANDARD UNITS) AND THEIR DELIVERY ERRORS - VI. MICRO-BURETTES (SUITABLE FOR USE WITH THE STANDARD UNITS) AND ERRORS INVOLVED IN THEIR USE - VII. THE MICRODIFFUSION METHOD WITH END-POINT VOLUMES AROUND 20 CUBIC MILLIMETRES - VII. COLORIMETRY IN THE MICRODIFFUSION METHODS - PART II - DESCRIPTION OF METHODS WITH THE STANDARD UNITS - IX. AMMONIA. GENERAL METHOD USING STANDARD ACID AS ABSORBENT - X. AMMONIA. GENERAL METHOD (USING THE BORIC-HCL PROCEDURE) - XI. SPECIAL FACTORS INFLUENCING THE RATE OF AMMONIA ABSORPTION - XII. OTHER METHODS FOR DETERMINING THE ABSORBED AMMONIA IN THE MICRO DIFFUSION PROCEDURE - XIII. AMMONIA. BIOLOGICAL DETERMINATIONS - XIV. TOTAL NITROGEN XVII. UREA (BLOOD AND URINE) - XIX. ADENOSINETRIPHOSPHORIC ACID, ADENYLIC ACID, ADENOSINE, ETC. - XX. NITRATE, NITRITE AND AMIDE NITROGEN - XXII. MONOAMINE OXIDASE AND HISTAMINASE IN TISSUES - XXIII. DETERMINATION OF VOLATILE AMINES - XXIV. CARBONATES AND BICARBONATE - XXV. BLOOD GLUCOSE AND FERMENTABLE SUGAR IN NORMAL URINE - XXVI. DETERMINATION OF CARBONIC ANHYDRASE - XXVII. OXIDATION RATES OF ORGANIC SUBSTANCES WITH A STANDARD OXIDANT WITH APPLICATION TO DETERMINATION OF MINUTE AMOUNTS OF CALCIUM AS OXALATE - XXVIII. ACETIC ACID AND OTHER LOWER FATTY ACIDS - XXIX. ASSAY OF ACETYLCHOLINESTERASE - XXX. CYANIDE, AZIDE, SULPHIDE, PHENOLS - XXXI. METHANOL AND ISOPROPANOL GROUP - XXXII. ETHANOL - XXXIII. ETHANOL FROM URETHANE - XXXIV. FORMALDEHYDE - XXXV. FORMALDEHYDOGENIC STEROIDS (PERIODIC ACID AS OXIDANT) - XXXVI. FORMALDEHYDOGENIC STEROIDS (SODIUM BISMUTHATE AS OXIDANT) - XXXVII. GLYCINE (FORMALDEHYDE PRODUCED BY NINHYDRIN OXIDATION) - XXXVIII. ACETALDEHYDE (SEMICARBAZIDE ABSORPTION) - XXXIX. ACETALDEHYDE FROM LACTIC ACID AND THREONINE WITH BISULPHITE ABSORPTION - XL. ACETONE (INCLUDING A RAPID CLINICAL METHOD USING THE NESSLER SOLUTION) - XLI. THE HALOGENS (INTRODUCTORY) - XLII. CHLORIDE (BY OXIDATION TO CHLORINE AND ABSORPTION INTO IODIDE) - XLIII. CHLORIDE (BY OXIDATION TO CHLORINE AND ABSORPTION INTO FAST GREEN) - XLIV. BROMIDE - XLV. IODIDES AND HALOGEN MIXTURES - XLVI. SERIAL DETERMINATION OF ORGANICALLY BOUND HALOGEN - XLVII. VOLATILE HALOGENATED HYDROCARBONS (CHLOROFORM, TRICHLORETHYLENE AND CARBON TETRACHLORIDE) - XLVIII. CARBON MONOXIDE - XLIX. A RAPID CLINICAL METHOD FOR CARBON MONOXIDE DETERMINATION - LI. TOTAL MOLECULAR CONCENTRATION IN FLUID SAMPLES OF ABOUT 3-4 MILLIGRAMS - LII. SEPARATION OF