Referee's report by Frederick Frost Blackman, on two papers 'On the quantitative differences in the water-conductivity of the wood in trees and shrubs. Part I. -The evergreens' and 'On the quantitative differences in the water-conductivity of the wood in trees and shrubs. Part II. -The deciduous plants' by John Bretland Farmer Sectional Committee: Botany Recommended for publication in the 'Proceedings of the Royal Society of London'. The work fills a gap in knowledge. Hopes the physiological results will be published soon as only slight reference is made in the paper. [Both paper published in the 'Proceedings of the Royal Society of London' B, 1918] Endorsed on verso as received 18 February 1918. [February 1918]