Tax exemption notification grants clause 23C status to Kodaikanal Boat Club, subject to income application and investment restrictions. Notification under clause (23C) of section 10 notifies Kodaikanal Boat Club as eligible under that clause for the stated assessment years, subject to conditions: income must be applied or accumulated in accordance with Section 11 as modified; investments and deposits are limited to permitted forms and modes; income may not be distributed to members except as grants to affiliated bodies; and business profits are excluded unless incidental and maintained in separate books.