Abstract: Analgesics applied to the skin together with or subsequent to the application of a non-toxic water-soluble sulfite exhibit enhanced effectiveness for relieving subdermal pain.

Abstract: Method and apparatus for converting recreational vehicles (RVs), camper bodies and trailers from land-based units to water-based units. Following conversion, the RV or camper becomes the "cabin" of a houseboat having an undercarriage which includes a pair of catamaran floatation pontoons supporting a flat deck. The undercarriage is fully supported during the loading of the RV or camper and is positioned level with the loading dock regardless of the water level in the launching body of water. The RV or camper is adjustably positioned on the undercarriage to produce a positive angle of attack in which the stern draws a deeper draft than the bow, and is then secured to the undercarriage to prevent relative movement between the RV or camper and the undercarriage.