572 JAMES: METHODS OF SEPARATION OF [Analyst, Vol. 88 Methods of Separation of Long-chnin Unsaturated Fatty Acids A Review* BY A. T. JAMES ( Unilevev Reseavch Labovatory, Colworth House, Shavnbvook, Beds.) The isolation of virtually any unsaturated fatty acid can be accomplished on the gram scale by counter-curren