Abstract: A composition and method of using same is disclosed for the permanent sterilization of female subjects without the need for expensive surgery or highly skilled personnel. The composition comprises a gel-forming carrier substance which sets-up on introduction into the fallopian tubes and holds in place a tissue fibrosing promoting material carried thereby for a period of time to cause fibrous tissue growth which closes the fallopian tubes and results in sterilization.

Abstract: A process is described whereby methyl cyanoacrylate (MCA) may be bacterially made sterile without the degradation of the product by partial or total polymerization and without the introduction of or creation of materials which are adverse to the use of the MCA in vivo in the human body. The process utilizes a filtration technique including a polytetrafluoroethylene (Teflon) filter element.

Abstract: The present invention relates to an apparatus for dispensing plant nutriments to a growing medium, such as soil, sand or the like, the apparatus being effective to transfer to the medium over protracted periods of time doses of nutriments at a rate which is a function essentially solely of the amount of water added to the growing medium at each watering. Broadly stated, the invention relates to a container which preferably includes a probe adapted to be inserted sufficiently below the surface of the growing medium to prevent evaporation. The container is sealed except for a dispensing aperture or apertures in the probe of critical size, larger than a capillary. The apparatus is characterized by its being filled with a hydrophilic gel, within which gel there has been dissolved a soluble nutriment component, preferably in saturation quantities. The gel may contain an inert soluble dye to signal the exhaustion of the active products.