TITLE: Dryland Commercial NuSun Sunflower Variety Trial at AG-CARES, Lamesa, TX, 2002 AUTHORS: Calvin Trostle, Texas Cooperative Extension-Lubbock, firstname.lastname@example.org, (806) 746-6101 METHODS AND PROCEDURES: Amarillo fine sandy loam June 28, 2002 on 40@ rows Cotton Lowest seed drop possible (about 21,000 seeds/acre with vacuum planter) thinned by hand to 11,000-12,000 two weeks after emergence. Plot Set-up: Two two-row strips (four plots) per hybrid, approximately 130= long Harvest Area: Four replicates, two 40-inch rows X 40= each. Fertilizer: None Herbicide: None Insecticide: Sprayed with Warrior T for sunflower head moth, ~August 22 Rainfall: See Lamesa area summary elsewhere in the AG-CARES report, 2.45@ for June 29-October 2. Date Harvested: October 2, 2002 Number of Entries: Eight (plus higher seeding rates on two hybrids) RESULTS AND DISCUSSION: Approximately 4,000 acres of sunflower were produced in 2002 from Lynn Co. south toward the Concho River Valley. To complement NuSun mid-oleic sunflower hybrid ...
A relation between the density and refractive index of silicate glasses, with application to the determination of imitation gem-stones.
By F. A. BANNISTER,M.A. Assistant-Keeper in the Mineral Department of the British Museum of Natural History. [Read March 19, 1929.]
T has long been possible to identify readily many minerals by means of density and refractive index determinations, and the chemical composition also can often be approximately deduced. Tilley 1 has shown that it is practicable to determine any natural glass by this method and be succeeded in separating the natural glasses into groups characterized by certain limits of specific refractivity. As far as the author is aware, no such systematic method has been described for distinguishing the artificial glasses one from the other, and it is these glasses that we are concerned with in attempting to determine the approximate composition of an imitation gem-stone without the aid of chemical analysis. The glasses employed in the manufacture of ...