If the holder of an office or employment of profit assessed under Schedule E of the Income Tax Act, 1918, is necessarily obliged to incur and defray out of the emoluments thereof amounts by way of subscription to a recognised society or institution existing for the advancement of learning, science or technology, there may be deducted from the emoluments to be assessed the amounts so necessarily incurred and defrayed. Provided that the amounts deducted shall not exceed fifteen pounds in the aggregate in any one year.—[Mr. Palmer.]