224 DEPARTMENTAL BEPOETS. 



and expended on cooperative work. Among the contributors were 

 the State of California, the Los Angeles Chamber of Commerce, the 

 Pasadena Board of Trade, and the Solar Observatory, Mount 

 Wilson, Cal. 



WORK FOE THE ENSUING YEAR. 

 COOPERATIVE PLANTING. 



The preparation of planting plans under the provisions of Cir- 

 cular No. 22 will be continued, and effort will be made to extend the 

 work bj' bringing the cooperative offer to the attention of a greater 

 number of landowners. The study of planted groves in Iowa will 

 be completed. It is expected to lead to more active cooperation 

 between the Service and railroads, pulp companies, and others inter- 

 ested in forest planting. Attention will be given to planting over 

 the coal beds in the Ohio Basin which are unproductive or giving 

 only small returns from agricultural crops. The black Ipcust will 

 be studied with care, because it is the species in greatest favor for 

 planting in this region. 



BESEKVE PLANTING. 



The reserve planting projects on the San Gabriel, Santa Barbara, 

 Pikes Peak, Gila River, Black Hills, and Dismal River forest re- 

 serves will be continued and extended. In connection with this a 

 large quantity of tree seeds will be collected this fall. 



In the Garden City Forest Reserve, created primarily as a tree- 

 planting reserve in June, 1905, active operations will begin this fall 

 by locating the site and preparing the ground for a nursery. The 

 planting of seed beds will follow next sprmg. 



If favorable reports are submitted for the reserves on which pre- 

 liminary reforestation plans are now being made, the establishment of 

 additional forest nurseries will be advisable in the spring of 1906. 

 These reserves are the Salt Lake, Prescott, Lewis and Clark, Gunni- 

 son, Modoc, Warner Mountains, Cassia, and possibly the Malad. 



DENDROLOGY. 



EOREST DISTRmUTION. 

 FOREST MAP OF THE UNITED STATES. 



The collection of data for mapping the forest types and the dis- 

 tribution of tree species in the United States was continued during 

 the year. A map showing the great types, prepared for the Louisiana 

 Purchase Exposition, was printed, and marks a considerable advance 

 in accurate knowledge. But the satisfactory completion of this most 

 important undertaking must be the work of years. Until it is com- 

 pleted, knowledge of the extent and economic possibilities of our 

 forest resources must remain fragmentary. 



STUDIES OF SPECIAL REGIONS, GROUPS, AND SPECIES. 



A study of the distribution, composition, and commercial value of 

 bottom-land forests in the " Big Thicket " region of southern Texas 

 was conducted during the year, 



