“…The existence of long-chain ethers of glycerol in naturally occurring lipids has been known for many years (Deuel, 1951;Hilditch, 1956). Until recently, the only types of ether-containing lipids found were -glyceryl monoethers, such as batyl, chimyl, and selachyl alcohols in Elasmobranchs (Kamovsky et al, 1946;Kamovsky and Brumm, 1955;Ilallgren and Larsson, 1962a i and in mammals (Holmes et al, 1941;Kamovsky et al, 1946;Hallgren and Larsson, 1962b). These glyceryl ethers probably exist in vivo in the form of glycerides or phospholipids (Kamovsky, 1951), since they are obtained only after hydrolysis of the intact lipids.…”