Abstract: The present invention is also a hands-on learning system which includes a model kit having a plurality of parts which when assembled form a three-dimensional mechanized action model. The hands-on learning system also includes means for instructing the student in mechanics with respect to the parts of the model kit, means for instructing the student in electricity with respect to the parts of the model kit and means for instructing the student on a subject which the model represents. Preferably, the hands-on learning system also comprises means for instructing the student in applied math skills relating to the parts of the model kit. Preferably, the assembled three-dimensional action model represents an animal and the means for instructing the student on a subject comprises means for instructing the student on a subject comprises means for instructing the student on biological facts related to the animal.

Abstract: A method of making animal specimen, of which the processing steps include a dead animal as a specimen body to be directly soaked in a 3-in-one mixed liquid for a given period of time; the 3-in-one mixed liquid comprises granular boric acid, NaCl, phenol, a liquid of formaldehyde solution, and a volatile alcohol. A specimen body soaked with such a mixed liquid has an excellent antiseptic result without removing the muscles, bones and internal organs of a specimen body, but a specimen body can be dried and made simply.

Abstract: Procedure for the visual and microscopic study of the characteristics of a vegetable plant; characterized because it includes the stages of: collection and selection of specific leaves from the plant; submission of a leaf to a pressing operation at approximately 6 kg/cm.sup.2 and later drying at ambient temperature of approximately 30.degree. ; under these conditions the leaf undergoes soaking in a disinfectant solution; thereafter the leaf is placed between two plastic sheets or films and these are closed with sterilization at 125.degree. C. which temperature is appropriate to carry out the thermowelding which takes place at a pressure of 6 kg/cm.sup.2 to remove any possible air bubbles.

Abstract: To produce from a deer or the like a desirably high-quality hunting trophy, it is necessary to select a proper line of cut between the anterior and the posterior part of the animal. According to the invention, there is provided as a guide to enable such a cut to be obtained a garment, made of a pair of panels of fabric and adapted to enclose the forequarters of the animal, the garment having a rearward edge which defines the desired line of cut. Ideally, the panels have garment-interior edges which are adapted to be located adjacent to the backbone or spine of the animal and to accommodate for animals of different size, these garment-interior edges are connected by one or more elastic members other garment-exterior edges of the panels are provided with fastening means preferably strip of hook-and-eye material of the kind sold under the trademark "Velcro", to enable the garment to be fitted substantially snugly about the forequarters of the animal.

Abstract: An enclosure to provide aquatic, amphibious and terrestrial plants and animals and flying animals with a natural environment that prevents escape. In one embodiment, an aquatic area and terrestrial area are connected by way of two ramps, so that animals may go back and forth between water and land. The aquatic and terrestrial areas are able to be drained through bottom outlets. The upper part of the enclosure confines an air zone in which flying animals may fly above and land in the water and land zones. The upper part of the enclosure has side and top openings covered by panels. At least one of the side panels is openable. In the preferred embodiment, the panels are covered with screen, however, they may be covered with glass or plastic.

Abstract: A taxidermic eye-mounting method wherein moist paper-mache or the like is stuffed through the eye opening of a hallowed-out animal head such as a fish head. A slightly flexible eye socket of substantially rigid material which has been molded to receive an artificial eye is set in the eye opening in the moist paper-mache. A fish eye is popped into the eye socket after the paper-mache has dried. The eye socket is formed to resemble the eye lid and eye membrane of an open animal eye such as an open fish eye. The socket may be made by a method of forming a moldable, pliable, non-hardening material around the animal eye to create a model which emulates the eye lid and eye membrane of an open animal eye such as an open fish eye.

Abstract: A watering system display stand comprises a display panel having a variety of garden plants graphically displayed thereon and a watering system, including a plurality of authentic interconnected irrigation components, mounted on the display panel to visually portray a typical mock, instructional watering system for the garden plants. A plurality of trays are mounted vertically below the display panel to retain corresponding irrigation components therein for purchase by a consumer. The trays are numerically coded to match corresponding codes imprinted adjacent to corresponding irrigation components mounted on the display panel. Rolls of porting and drip tubing are mounted on the display stand, below the trays. The trays are formed from suitably scored paperboard blanks that are folded to form interlocked panels.

Abstract: Accurate heads are prepared by molding processes for the use by taxidermists in preparing fish for permanent display. The heads are removed from the silicone rubber mold just after the molding composition has achieved its peak exotherm and becomes very firm.

Abstract: A tetrahedral stereo-table is disclosed for 64 DNA and/or RNA codons. The table comprises its tetrehedral 4 faces each divided into 16 codon phases for the representation of the respective codon triplets plus the 21 teams of 20 L-amino acids and one triphasic termination team O. Such a representation can be realized with alphabet characters and/or coloration for the triplets and teams. The triplets are alternatively represented by ideograms having no alphabetic orientation in addition to the team coloration. Said tetrahedral 4 faces may be transcribed over the surface of a sphere.

Abstract: This invention is a demonstration device to be used in the teaching of the concept of the Fluid Mosaic Membrane. The Biomembrane Demonstration Apparatus consists of a transparent vessel containing two or three immiscible fluids with sufficient difference in density to support layering. Phospholipid molecules are represented by a spherical head region and two tail-like structures; said molecules are of two types, differing in density such that a lipid bilayer is naturally formed along the interfaces between the immiscible fluids. Protein representing molecules are designed to float within either or both lipid layers. The device may be used as a showpiece or as a working demonstration model.

Abstract: A method for determining the relationship of chemical structure to biological activity based on the topology and physiochemical properties of "cavities" or "artificial constructs" constructed from molecular models of nucleic acids, including, double-stranded DNA, double-stranded RNA and double-stranded DNA-RNA complexes. With DNA models, the second codon base is removed from each of the sixty-four possible codon-anticodon complexes in the configuration of DNA to form the cavities. Cavities were also formed between the base pairs of partially uncoiled DNA. Using the conventional physiochemical principles of hydrogen bonding and steric constraints, molecules having varying types of biological activity will fit stereochemically into certain cavities while, conversely, molecules which do not form complementary fits into a given cavity will not possess the respective biological activity. Also, the method can be utilized to determine the degree of biological activity of compounds.