Agriculture--Photographs.; Plants--Effect of poisons on--Photographs.; Field crops--Photographs.; Maps--Photographs.; Ansbacher Chemical Co.; Chipman Chemical Engineering Co.; Corona Chemical Co.; Devoe & Raynolds Company.; Dow Chemical Co.;...
General summary of 1921 calcium arsenate map showing localities furnishing samples of material made by all companies. Photo lab.
Agriculture--Louisiana--West Feliciana Parish--Photographs.; Oak Grove Plantation (West Feliciana Parish, La.); Plants--Effect of poisons on--Photographs.; Plantations--Louisiana--West Feliciana Parish--Photographs.
Center of calcium arsenate poisoned plat showing condition of cotton.
Agriculture--Louisiana--Photographs.; Plants--Effect of poisons on--Louisiana--Photographs.; Field crops--Louisiana--Photographs.; Maps--Photographs.; Corona Chemical Co.
1920 calcium arsenate samples. Map showing localities furnishing samples of material made by the Corona Chemical Co.
Agriculture--Photographs.; Plants--Effect of poisons on--Photographs.; Field crops--Photographs.; Cotton--Research--Photographs.; Johnson Cart Duster--Photographs.
General view, Cut O, plat #3, (Johnson's cart duster test) showing height of cotton at this date.
Agriculture--Louisiana--St. John the Baptist Parish--Photographs.; Plants--Effect of poisons on--Photographs.; Field crops--Louisiana--St. John the Baptist Parish--Photographs.; Cotton--Research--Louisiana--St. John the Baptist...
Close up, Cut O, plat #2, showing height of cotton at first poisoning. Evergreen Plantation.
