Thomas Pennant was a very popular naturalist in Britain during the second half of the eighteenth century. This copy of his bestselling book, British Zoology, was owned by George Allan, an amateur naturalist from Darlington in the north-east of England. Allan bound his copy with extra pages so that he could add lots of handwritten notes, newspaper articles and illustrations to Pennant’s text. He added so many pages that the whole set doubled in size to eight volumes.