Pomology Charles were prominent in Pomology and Horticulture, producing "The Fruits and Fruit Trees of America" (1845). The introduction of new varieties required exact depiction of the fruit so that plant breeders could accurately document and disseminate their research results. Since the use of scientific photography was not widespread in the late 19th Century, USDA commissioned artists to create watercolor illustrations of newly introduced cultivars. Many of the watercolors were used for lithographic reproductions in USDA publications, such as the "Report of the Pomologist" and the "Yearbook of Agriculture". Today, the collection of approximately 7,700 watercolors is preserved in the National
What Is History? sometimes been made to treat history as a branch of sociology." About the rise of social history as a subject at the expense of political history, Carr wrote:"Social history is the bedrock. To study the bedrock alone is not enough; and becomes tedious; perhaps this is what happened to Annales. But you can't dispense with it". Through Carr himself had insisted that history was a social science, he regretted the decline of history as a discipline relative to the other social sciences, which he saw as a part of a conservative trend. Carr wrote: "History is preoccupied with fundamental processes