Hump lipids of Camelus dromedarius (single-humped camel) were extracted and fractionated by thin-layer chromatography. 2. The hump lipids were found to be mainly triglycerides with a trace of phospholipids. 3. The fatty acid methyl esters of the triglycerides were studied by gas-liquid chromatography. 4. The major fatty acids were found to be palmitate (35%), stearate (26%), oleate (24%) and myristate (12%). Hexadecenoic (2%) and pentadecanoic acids were minor components.