188 



as it is practically indestructible. It is, however, too hard and too 

 heavy for general purposes ; it is also brittle. Its chief value is 

 for the tannin extract prepared from the wood. 



North American Hardwoods are in great request principally in 



some 



planed to the hand of the user. Satin Walnut is in demand 

 chiefly in the better grades, but the average width of the boards 

 imported is seldom more than 11 inches. The sapwood and 

 diseased trees of the Satin Walnut are imported at a very low 

 price and sold under the name of Hazel Pine, and are principally 

 used for cheap cabinet work and coffins. Bay Poplar or Tupelo 



^jum has come in m some quantity, but has met with only a poor 

 reception. 



In collecting these notes upon timbers the writer was greatly 

 assisted by Mr. Robert Gardner, Mr. Edmund Sergeneson and 

 Mr. James A. Weale. 



Economic Collections.— In the Botanic Garden, one of the 



Public Institutions of the City, the following interesting group of 

 economic plants was observed in ad 

 the Bulletin previously referred to : 



mentioned 



elastica) 



A 



Ipecacuanha) 



Sierra Leone Copal (Gopaifera Guibo 

 Croton (Groton Tiglium). 

 Cola {Cola acuminata). 

 Bay Berry (Pimenta acris). 

 Avocado Pear (Persea gratissima). 

 Lignum Vitae (Guaiacum officinale) 

 Coca (Erythroxylon Goca). 



(Sideroxylon dukifi 



) 



Oil Palm (Elaeis guineensis). 

 Tamarind (Tamarindus indica). 

 Bowstring Hemp (Samevieria zeytanica). 

 Sugar Cane (Saccharum officinarum). 

 Para Rubber (Hevea brasitiensis). 

 Sweet Cassava (Manihot palmata). 

 Mammee Apple (Mammea americana). 

 Cherimoyer (Anona Gherimolia). 

 Mahogany (Swietenia Mahagoni). 

 Red Cinchona (Cinchona succirubra). 

 Baobab (Adunsmia digitata). 

 Mango (Mangifera indict 



(Passijl 



ifoha) ; in fruit. 



