3Q THE BUREAU OF SCIENCE 



in forestry is given, is located near the reserve, and students do 

 most of their field work in the reserve. The botanical results 

 will be available to students both of forestry and of agriculture. 



41. Forestry. — The matter of the correct classification of com- 

 mercial timber trees is one of great importance to the forester, 

 especially in the Philippines where we have such an immense 

 number of trees — about 2,500 species. Only a small percentage 

 of these, however, is of commercial value. With the correct 

 identification of the species, as made by this Bureau, the foresters 

 have been able to refer the names of the various timber trees 

 to a standard nomenclature and thus have been able to reduce 

 the infinite number of native names as synonyms to selected 

 standard names and our scientists have been able especially to 

 correlate the commercial Philippine timbers with similar or allied 

 forms in other parts of the Indo-Malayan region. 



42. Horticulture. — In order to help stimulate local interest 

 among Government officials and private citizens in the matter 

 of the selection, propagation, and care of ornamental plants and 

 shade trees, considerable attention has been given to this phase 

 of horticulture, two editions of a descriptive catalogue of the 

 plants cultivated in the city nursery at the Cementerio del Norte 

 have been prepared, and an article on selected shade trees 

 and their care prepared and published in the Quarterly 

 Bulletin of the Bureau of Public Works. Through exchanges 

 arranged by the Bureau of Science, seeds of numerous ornamen- 

 tal palms and other plants have been received from foreign coun- 

 tries for propagation here. 



43. Mango bnd-blight. — In the Philippines there is a mango 

 bud-blight which attacks the mango flowers at about the time 

 they are opening, grows over them, and causes them to become 

 abortive and fail to set fruit. The attention of growers has 

 repeatedly been called to the fact that, if they would take the 

 trouble to spray the trees with a weak Bordeaux mixture at the 

 time of flowering, a good crop could be obtained. 



44. Hats and hat-making materials. — Investigations have been 

 made and published on the diff'erent types of hats manufactured, 

 their characteristics, the materials of which they are made, how 

 the materials are prepared, and where they are secured. The 

 published article also takes into consideration the grades of hats 

 and the centers of the hat-making industry in the Philippines. 

 This subject is one of considerable commercial importance, for 

 the manufacture and export of hats from the Philippines is a 

 comparatively large industry. 



45. Medicinal plants. — A very large number of plants are used 



