What is Bounty?

Legal Definition
A sum of money or other thing, given, generally by' the government, to certain persons, for some service they have done or are about to do to the public. As bounty upon the culture of silk; the bounty given to an enlisted soldier; and the like. It cliffers from a reward, which is generally applied to particular cases; and from a payment, as there is no contract on the part of the receiver of the bounty.
-- Bouviers Law Dictionary
Legal Definition
A gratuity or an unusual or additional benefit conferred upon or compensation paid to, a class of persons. Iowa v. McFarland, 110 U. S. 471, 4 Sup. Ct. 210, 28 In Ed. 198. A premium given or offered to Induce men to enlist into the public service. The term is applicable only to the payment made to the enlisted man, as the inducement for his service, and not to a premium paid to the man through whose intervention, and by whose procurement, the recruit is obtained and mustered. Abbe v. Allen, 39 How. Prae. (N. Y.) 488. It is not easy to discriminate between, bounty, reward, and bonus. The former is the appropriate term, however, where the services or action of many persons are desired, and each who acts upon the offer may entitle himself to the promised gratuity, without prejudice from or to the claims of others; while reward is more proper in the case of a single service, which can be only once performed, and therefore will be 'earned only by the person or co-operative persons who succeed while others fail. Thus, bounties are offered to all who will enlist in the army or navy ; to all who will engage in certain fisheries which government desire to encourage ; to all who kill dangerous beasts or noxious creatures. A reward is offered for rescuing a person from a wreck or fire; for detecting and arresting an offender; for finding a lost chattel. Kircher v. Murray, (C. C.) 54 Fed. 624; Ingram v. Co.lgan, 106 Cal. 113, 38 Pac. 315, 28 L. R. A. 187, 46 Am. St. Rep. 221. Bonus, as compared with bounty, suggests the idea of a gratuity to induce a money transaction between individuals; a percentage or gift, upon a loan or transfer of property, or a surrender of a right. Abbott.
See also
-- Black's Law Dictionary
Legal Definition
An addition to ordinary compensation for an act or service; a premium. See 46 Am. St. Rep. 221.
-- Ballentine's Law Dictionary