Suggested databases to locate newspaper and magazine articles published in the nineteenth century:
Parliamentary Papers (1801- 1900) Full text of the complete set of the nineteenth century British Parliamentary Papers collection including Hansard Parliamentary Debates. A major source of primary source materials on all aspects of British society and the British Empire.
Nineteenth Century Collections Online Includes "British Politics and Society" - Full text collections of major British primary source materials including radical newspapers, British Cabinet Papers, Home Office files.
Victorian Web With over 61,000 documents and images, the Victorian Web focuses on the literature, history and culture in the age of Victoria.
Primary sources provide first-hand testimony or direct evidence concerning a topic under investigation.
What about Science? In the sciences, a primary source is the published result of experimental or observational research.