A new Hypericum plant particularly distinguished by light-yellow berries and an upright, dense, and bushy plant habit, is disclosed. The methods involve measuring the amount of amyloid-\u03b2 peptide in the cerebrospinal fluid of a patient. The caulking gun includes structure for performing the functions of cutting the nib or distal end of the spout of the caulk cartridge and dredging the mouth of the caulk cartridge. Both the cold and hot water inlet tubes have a short extended insertion section and also have a seal ring at their ends respectively. A right-angled bend is also formed at the ends of the fluorescent lamp.