The requisite qualities of a life-boatman's life-belt t'l are — ; ft- .-,:r X. 1. Sufficient extra buoyancy (maximum 28 Ibs., 1 /3 minimum 25 Ibs.) to support a man heavily clothed, J with his head and shoulders above the water, or OJ fUff fj to enable him to support another person besides a& Pffjj } ' Sfti himself.

~ - jJB* • BiYi 5 A 2. Perfect flexibility, so as to readily conform to HMP T L fl 1 •Bk the shape of the wearer. vlil »4 3. A division into two zones, an upper and lower, 3|""jt*- so that between the two it may be secured tightly •i TT T] vP r round the waist ; for in no other manner can it be lj -']f confined sufficiently close and secure round the body -tTjjLjfojf without such pressure over the chest and ribs as ft • to materially affect the free action of the lungs |,B impede the muscular movement of the chest and arms, and thereby diminish the power of endurance ' Va&J of fatigue, which, in rowing-boats, is a matter of vital f ESS l ''$j$M importance. { . Strength, durability and non-liability to injury..