Earwax in the canal. Jaw movement assists this process by dislodging debris attached to the walls of the ear canal, increasing the likelihood of its expulsion. The lubrication provided by cerumen prevents desiccation of the skin within the ear canal. The lubricative properties arise from the high lipid content of the sebum produced by the sebaceous glands. In wet-type cerumen, these lipids include cholesterol, squalene, and many long-chain fatty acids and alcohols. While studies conducted up until the 1960s found little evidence supporting antibacterial activity for cerumen, more recent studies have found that cerumen has a bactericidal effect on some strains
Pith and substance be fairly full and comprehensive, soon, it was found that the topics enumerated in the two sections overlapped, and the Privy Council repeatedly had to pass on the constitutionality of laws made by the federal and provincial legislatures. It was in this situation that the Privy Council evolved the doctrine, that for deciding whether an impugned legislation was "intra vires", regard must be had to its pith and substance. Thus, if a statute is found in substance to relate to a topic within the competence of the legislature, it should be held to be "intra vires" even though it might