gQ THE BUREAU OF SCIENCE 



by this office for material from other tropical countries. During 

 the past year exchanges have been arranged with — 



C. G. Lloyd, Cincinnati, Ohio, for fungi. 



H. Winkler, Breslau, Germany, for Bornean plants. 



H. Sydow, Berlin, Germany, for fungi, 



E. J. Butler, Pusa, India, for fungi. 



T. Fetch, Peradeniya, Ceylon, for fungi. 



Royal Botanic Gardens, Edinburgh, Scotland, for Indian and Chinese plants. 



Taihoku Museum, Taihoku, Formosa, for Formosan plants. 



Copland King, Ambasi, Papua, for New Guinea plants. 



H. Yanagawa, Koshun, Formosa, for Formosan plants. 



P. Konig, Mauritius, for Mauritian plants. 



R. S. Hole, Forest Research Institute, Dehra Dun, India, for Indian plants. 



Carnegie Museum, Pittsburgh, Pa., for tropical American plants. 



N. Patouillard, Neuilly-sur-Seine, France, for fungi. 



Bureau of Plant Industry, U. S. Department of Agriculture, for fungi. 



F. Bubak, Tabor, Bohemia, for fungi. 



Exchange propositions are pending with several other indi- 

 viduals and institutions. In the past year exchange material 

 has been sent to 35 different institutions and individuals, and 

 material has been received from 20 different sources. 



Puhlications. — The Philippine Journal of Science, Section C, 

 Botany, for which the section of botany is responsible, has been 

 successfully issued. The papers here published have been pre- 

 pared by employees of this Bureau or by various other special- 

 ists, and are nearly all based on material supplied by the Bureau. 

 A list of the articles published and publications issued during 

 the year is given elsewhere. 



In addition to the papers already published, several others are 

 now in press, others are ready to be sent to the printer, and 

 still others are in preparation. 



Investigations. — The work of Mr. E. D. Merrill, chief of this 

 section, so far as he is free from duties of botanical instruction 

 in the University of the Philippines, still continues to be largely 

 on questions of taxonomy and geographical distribution of plants. 

 The Philippine collections made during the past year have been 

 so extensive that there is work for several months in sight in 

 properly classifying and distributing the material already pre- 

 pared. The novelties to be found in these collections will be 

 the basis or partial basis of several papers now in preparation 

 or anticipated. Data recently secured in northern Palawan will 

 be worked up into a paper on the relationship of the caingin 

 system of agriculture to the various types of vegetation, and 

 especially the great loss to the timber resources of the Islands 

 from this system of clearing the forests and burning the fallen 



