blood from the calf to a well-known madman in paris but fortunately it failed and touched off of coltrane and political debate that ran for two centuries and repercussions evert -- even today. of officer of the will work is called holly tucker with the medicine health and society with a specially of medicine. her book a wonderful narrative was just nominated for the "l.a. times" book award, awarded on april 20th science and technology nonfiction. tell us about this book starting off on our historical tour. >> 84 the chance to be here to be with two fantastic authors i started to write this book several years ago primarily as the study of the history of blood and took a life of its own pry noticed through research that the first pled transition to equates in the 17th century as a response to blood circulation by william harvey and then people wanted to test the idea so they started to put plywood liquor, booze, opium, of no, no water coming into the veins of dogs the ada is blood of early medicine you think lancet and bloodletting. it made no sense to the mind they had to test the idea and