Of Usucaption and Prescription among Nations§ 140. Definition of usucaption and prescription.§ 141. Usucaption and prescription derived from the law of nature. § 142. What foundation is required for ordinary prescription.§ 143. Immemorial prescription.§ 144. Claimant alleging reasons for his silence.§ 145. Proprietor sufficiently showing that he does not mean to abandon his right.§ 146 Prescription founded on§ 147. Usucaption and prescription take place between nations.§ 148. More difficult between nations, to found them on a presumptive desertion.§ 149. Other principles that enforce prescription.§ 150. Effects of the voluntary law of nations on this subject.§ 151. Law of treaties or of custom in this matter. 1. See Grotius de Jure Belli et Pacis, lib. ii. cap. lv. Pufendorf, Jus Nat. et Gent. lib. iv. cap. xii. and especially Wolfius, Jus Nat. part iii. cap. vii.