The olive thrives in dry climates like that of Syria and Assyria. It succeeds at the Cape, in parts of America, in Australia, and doubtless it will become wild in these places when it has been more generally planted. Its slow growth, the necessity of grafting or of choosing the shoots of good varieties, and especially the concurrence of other oil-producing species, have hitherto impeded its extension; but a tree which produces in an ungrateful soil should not be indefinitely neglected. Even in the old world, where it has existed for so many thousands of years, its productiveness might be doubled by taking the trouble to graft on wild trees, as the French have done in Algeria. +Star Apple+—_Chrysophyllum Caïnito_, Linnæus. The star apple belongs to the family of the Sapotaceæ. It yields a fruit valued in tropical America, though Europeans do not care much for it. I do not find that any pains have been taken to introduce it into the colonies of Asia or Africa. Tussac gives a good illustration of it in his _Flore des Antilles_, vol. ii. pl. 9. Seemann[1415] saw the star apple wild in several places in the Isthmus of Panama. De Tussac, a San Domingo colonist, considered it wild in the forests of the West India Islands, and Grisebach[1416] says it is both wild and cultivated in Jamaica, San Domingo, Antigua, and Trinidad. Sloane considered it had escaped from cultivation in Jamaica, and Jacquin says vaguely, “Inhabits Martinique and San Domingo.”[1417] +Caïmito+, or +Abi+—_Lucuma Caïnito_, Alph. de Candolle. This Peruvian Caïmito must not be confounded with the _Chrysophyllum Caïnito_ of the West Indies. Both belong to the family Sapotaceæ, but the flowers and seeds are different. There is a figure of this one in Ruiz and Pavon, _Flora Peruviana_, vol. iii. pl. 240. It has been transported from Peru, where it is cultivated, to Ega on the Amazon River, and to Para, where it is commonly called _abi_ or _abiu_.[1418] Ruiz and Pavon say it is wild in the warm regions of Peru, and at the foot of the Andes. +Marmalade Plum+, or +Mammee Sapota+—_Lucuma mammosa_, Gærtner.