Gub Gub's Book: An Encyclopedia of Food: In Twenty Volumes is a 1932 children's book in the Doctor Dolittle series by Hugh Lofting. Gub-Gub the pig was one of the first animals with whom Doctor Dolittle learned to talk and appears in most of the books. This book features stories from and about Gub-Gub's attempt to write an encyclopedia of food. A book readable by adults as well as children, who will possibly better appreciate the value and practicality of the gingersnap hygrometer.