Scope and Contents These four quarto sized volumes contain 58 pages of watercolors, each page measuring 34 x 27 cm., with varying image sizes. Each volume includes a dated title page and a contents page, handwritten in black ink, and each plate is followed by a hand written description. The watercolors are notable for the portrayal of the iridescence on the plumage of the hummingbirds, a technique invented by Baily, accomplished by the use of gold and silver leaf. A relative, John Collins, assisted Baily in...