vin, a, i Pratt and del Rosario: Philippine Fruits 61 



identified x in every case, although traces of other acids, present 

 chiefly as salts, are probably also factors in the composition. 



Sugars were determined both by copper reduction and by 

 polariscopic readings before and after inversion. Sucrose was 

 calculated by Clerget's formula. The percentage of total invert 

 sugar after inversion divided by the percentage of acidity ex- 

 pressed in terms of sulphuric acid gives what may be called the 

 sugar ratio. This is a measure of the apparent degree of sweet- 

 ness, and is useful in comparing different fruits. Ten-gram 

 samples were used in the Gunning method for nitrogen. The 

 results are expressed as protein (nitrogen X 6.25). Starch was 

 determined by acid inversion when present in appreciable 

 amounts. 



It is a common practice throughout the Islands for the native 

 fruit growers to send their products to market in an immature 

 condition. This is apparently done to avoid theft, and has re- 

 sulted in creating a demand for green fruits that are far inferior 

 in size and flavor to what could be expected under normal 

 conditions. 



The many types of citrus fruits and bananas have been re- 

 served for a future publication, as the collection at present being 

 made by the Bureau of Agriculture is incomplete and specimens 

 are not available. 



The botanical descriptions were made by Mr. E. D. Merrill of 

 the Bureau of Science. 



The following abbreviations for the various native languages 

 are used throughout the paper: 



Sp. Fil. 



.= Spanish Filipino. 



T. 



= Tagalog. 



V. 



= Visayan. 



11. 



= Ilocano. 



Pamp. 



= Pampangan. 





THE MANGO 



A L. Plate I; Plate II, fig. 1. 



MANGIFERA INDICA L. Plate I; Plate II, fig. 1. Mango; Manga T., 

 V., II. ; Paho, V. 



A large tree with glabrous, oblong or lanceolate leaves and 

 terminal panicles of small yellow flowers. Fruit large, yellow, 

 fleshy, ellipsoid to oblong-ovoid, equally rounded or narrowed 

 and somewhat pointed at one end, up to 18 centimeters long, the 



'Cir. U. S. Dept. Agr., Bur. Chem. (1911), 76; (1911), 87; (1911), 88. 



