LANNOY

lannoy, guillebert de (1386-1462), flemish diplomatist, was chamberlain to the duke of burgundy, governor of the fort of sluys, and a knight of the golden fleece. he discharged several diplomatic missions in france, england, prussia, poland and lithuania, and was one of the negotiators of the treaty of troyes (1420). in 1421 he was sent by henry v. of england to palestine to inquire into the possibility of reviving the kingdom of jerusalem, and wrote an account of his travels, _les pelerinages de surye et de egipte_, which was published in 1826 and again in 1842. lanolin (lat. _lana_, wool, and _oleum_, oil), the commercial name of the preparation styled _adeps lanae hydrosus_ in the british pharmacopoeia, and which consists of 7 oz. of neutral wool-fat (_adeps lanae_) mixed with 3 fluid oz. of water. the wool-fat is obtained by purification of the "brown grease," "recovered grease" or degras extracted from raw sheep's wool in the process of preparing it for the spinner. it is a translucent unctuous substance which has the property of taking up large quantities of water and forming emulsions which are very slow to separate into their constituents. owing to the ease with which it penetrates the skin, wool-fat both in the anhydrous form and as lanolin, sometimes mixed with such substances as vaseline or fatty oils, is largely employed as a basis for ointments. it is slightly antiseptic and does not become rancid.