The crest is also designed to stress the pursuit of knowledge. It consists of a red torch held erect by a forearm between two branches of gold laurel. Having been originally worn on the helmet of a fully armed person, the crest is always placed on the top of the helm. The method of joining the crest to the helm was usually concealed by decoration and, in the University's arms, this is effected by the use of a wreath and a crown. The wreath is silver, red and black, these colours being taken from the shield. It is surmounted by a mural crown (resembling a wall), which is reserved in modern grants for persons and organisations connected with public corporations. The cloth mantling which hangs down from the top of the helm is the survival of the cloak which was originally worn to protect the armour, coloured in the two principal colours of the shield, blue and gold.