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hereafter most of the specimens from this area coming into 

 the possession of the Garden will be incorporated into this col- 

 lection, instead of into the general herbarium. This plan 

 will make reference to the local plants easier and will reduce 

 a certain amount of handling of the large collection which 

 would otherwise be necessary. 



{b) Columbia University Herbarium. About 8,057 speci- 

 mens have come into the possession of Columbia University. 

 Fully 10,747 sheets, representing about 11,022 specimens 

 have been placed in its herbarium. The specimens on 

 several thousand sheets of the moss collection that were 

 temporarily mounted when that part of the herbarium was 

 first brought into accessible condition, have been placed in 

 uniform envelopes and remounted on new herbarinm sheets. 



5. Uses of the Herbarium. The members of the 

 Garden Staff have made constant use of these collections in 

 matters relating to the development of the several depart- 

 ments, in the pedagogic work in connection with the various 

 courses of instruction, for research work and special investi- 

 gations. The members of the staff of the department of 

 Botany of Columbia University have likewise made use of 

 the herbarium. The registered students of both institutions 

 have drawn on this source of information as their studies 

 directed. Responsible persons not connected with either 

 institution have used the collections for some definite pur- 

 pose. Visiting officers and students of many colleges and 

 universities have consulted such portions of the herbaria as 

 their investigations required. 



6. Plant Picture Collection. The first steps toward 

 the bringing together of all the loose plates, photographs and 

 drawings belonging to the institution were taken during the 

 latter part of the year and considerable progress has been 

 made in sorting pictures and making the collection accessible. 

 The plan adopted is to arrange all the material in firm folders 

 after the sequence of Engler and Prantl's " Die Naturlichen 

 Pflanzenfamilien." The pictures will thus be readily ac- 

 cessible either for special pedagogic or herbarium work, or 



