++++ 1 . Agriculture - Approximation of laws - Additives in feedingstuffs - Directive 70/524 before its amendment by Directive 84/587 - Identification and purity of additives - Complete harmonization - Measures of health conrol applicable to traders - Absence of harmonization allowing national measures under Article 36 of the Treaty ( EEC Treaty, Art . 36; Council Directive 70/524, as amended ) 2 . Free movement of goods - Quantitative restrictions - Measures having equivalent effect - Importations of feedingstuffs containing additives subject to prior authorization ( EEC Treaty, Art . 30 ) 3 . Agriculture - Approximation of laws - Additives in feedingstuffs - Check sampling provided for by Directive 70/524 - Levy charged to cover costs of control - Compatibility with the directive and Articles 9 and 95 of the Treaty ( EEC Treaty, Art . 9 and 95; Council Directive 70/524, as amended )