THE Line-throwing Gun, which was designed for the Institution in 1922 by the B.S.A., and which is now installed on all Motor Life-boats, except those of the lightest type, has been widely adopted in Japan. There it is being used not only by the Life-boat Service, but by the navy, which has adopted it for throwing lines so as to prevent ships from endangering themselves by going too close to wharfs. A number have also been ordered by an estate office for the purpose of throwing lines over its buildings in case of fire..