Abstract: There are provided compositions for dental and oral hygiene which desorb microorganisms and which adsorb odorous mercapto-compounds which cause halitosis. The compositions comprise as active ingredient hydrophobic materials selected from vegetable oils, certain mineral oils and hydrocarbons.

Abstract: A clasp for an article of jewelry or the like of the type having a latch member engageable with a keeper member for fastening the clasp. The latch member has a resiliently depressible hook portion disposed for movement from a normally extended position to a flexed position. The keeper member comprises a housing having an open end through which the hook portion of the latch member may be inserted or withdrawn when the hook portion is in its flexed position. The housing also includes an apertured wall located to receive the hook portion for engaging the latch member within the housing and permitting the hook portion to move to its extended position for fastening the clasp. The hook portion extends beyond the aperture in the housing wall when the latch member is engaged within the housing, and terminates in an end portion overlying an edge portion of the housing wall forming the periphery of said aperture when the latch member is moved in the direction of withdrawal from the housing.

Abstract: A clasp for an article of jewelry or the like of the type having a latch member engageable with a keeper member for fastening the clasp. The latch member has a resiliently depressible hook portion disposed for movement from a normally extended position to a flexed position. The keeper member comprises a housing having an open end through which the hook portion of the latch member may be inserted or withdrawn when the hook portion is in its flexed position. The housing also includes an apertured wall located to receive the hook portion for engaging the latch member within the housing and permitting the hook portion to move to its extended position for fastening the clasp. The hook portion extends beyond the aperture in the housing wall when the latch member is engaged within the housing, and terminates in an end portion overlying an edge portion of the housing wall forming the periphery of said aperture when the latch member is moved in the direction of withdrawal from the housing.