The collection contains 164 botanical and zoological paintings created chiefly by Elizabeth Gwillim as well as possibly by her sister Mary Symonds while living in Chennai, India (then Madras). The collection includes 121 watercolours of birds with inscriptions, 31 watercolours of fish, and twelve of flowers, drawn from life rather than specimens. The paintings reflect the sisters' time in Madras during which, as artists and letter writers, they created a substantial visual record of the landscape and inhabitants of Madras and environs. The paintings also reflect Gwillim's scientific pursuits, including her study of botany.