40(3 PROCEEDINGS OF THE ACADEMY OF [1889. 



22. A. persimilis. 

 West Indies. 



23. A. alopecuroides. 

 "West Indies. 



24. Pera, sp. ? 



25. Sapium laurifolium, Gr. 



Gutu tree. West Indies and Cuba. 



26. Hura crepitans, L. 



Sand-box tree. West Indies and South America. Fruit acrid, 

 emetic rubefacient, poisonous; juice causes injury to the eyes. 



27. Excoecaria lucida, Sw. 

 West Indies. 



28. E. Cubana. 

 West Indies. 



29. Euphorbia buxifolia, Lam. 



Spurge. Indigenous and West Indian. 



30. E. serpens, Kth. 

 Indigenous and West Indian. 



31. E. maculata, L. 



Eye bright. All tropical countries. 



32. E. pilulifera L. 



All tropical countries. 



33. E. hypericifolia, L. 



West Indian, Southern United States and Europe. 



34. E. punicea, Ait. (Swains.) 

 Wild Physic-nut. Indigenous. 



35. E. heterophylla, L. Var. prunifolia, Jacq. (Swains.) 

 Joseph's-Coat. Indigenous and West Indies. 



36. E. (Poinsettia) splendens. 



In gardens. Native of Madagascar. 



37. Euphorbia, sp. T 



38. Hippomane Mancinella, L. 



Manchineel. West Indies and South America. A common tree 

 in Fortune Island. (Eggers.) 



The Euphorbiaceae have a milky juice, which in almost every case 

 is more or less poisonous, but it becomes innocuous when heated. 

 From this property of the juice, it is possible to make use of the 

 valuable starch which some of the plants contain, e. g. Tapioca, ob- 

 tained from Janipha Manihot. Sapium, Hura and Excoecaria are 



