. . . . "history of chemistry" . "historically" . "History of chemistry" . . "History of chemistry" . . . "chemistry" . "chemical revolution" . . . . "chemical history" . "early chemistry" . "transformed to chemistry" . "fundamental advances in chemistry during the 19th century" . . . "fundamental branches" . "twentieth century" . . . . . "Most" . . . . "the advancing chemical science of the nineteenth century" . . "that of chemistry" . "The History of Chemistry" . "historian of chemistry" . "History_of_chemistry#19th_century" . . "late twentieth century" . "burgeoning chemistry" . "history" . . . . "History_of_chemistry#20th_century" .