Care of the Collections— Botany 



During the year 4,980 plants were mounted and added to the 

 phanerogamic herbarium. Mounting and poisoning was done by 

 Miss Olive Doig, Mrs. Jennie Pletinckx, and Nils Siegbahn, assisted 

 by Robert Yule and, for part of the year, by Miss Margaret Lestina 

 and Miss Catherine Sanford, student assistants. Mrs. Effie M. 

 Schugman and Miss Alice Middleton mounted 9,587 specimens of 

 cryptograms and prepared them for filing in the general collection. 

 The processing of the identified portion of the Cuatrecasas Col- 

 lection of Colombian woods was completed by Mrs. Ann Bigelow. 

 During the year a total of 566 wood specimens was sent out in 

 exchange. A necessary reorganization of the rapidly expanding 

 seed collection was accomplished by Edward Rosenbaum and Peter 

 Ogle, Antioch College students. Work on the restoration of the 

 type-photograph collection was continued by Assistant J. S. Daston. 

 Mrs. Lenore B. Warner, who continued cataloguing and filing 

 negatives, positives, and prints of type photographs, handled all 

 the orders for prints that were sold or sent in exchange to individuals 

 or to other scientific institutions. 



Exhibits— Botany 



The major alterations currently undertaken in Charles F. Mills- 

 paugh Hall (North American Trees, Hall 26) mark the beginning 

 of the last phase of the complete revision and rearrangement of the 

 exhibits of North American woods. Most of the remaining leafy 

 branches needed to complete the three-dimensional models supple- 

 menting each wood exhibit are on hand awaiting preparation. One 

 important innovation consists of improved built-in wall cases by 

 which the former window-transparencies will be more attractively 

 displayed with constant illumination free from the damaging and 

 fading effects of direct sunlight. Because individual case-lighting 

 will soon be introduced in Hall 26, all cases must be completely 

 reinstalled, a slow and painstaking process. During the year 

 fourteen exhibits were reinstalled. This work is being carried on 

 by Curator of Exhibits Emil Sella and Preparator Walter Huebner. 

 Nine new model branches were also added. Of these the branches 

 of rock elm (Ulmus Thomasi), red mulberry (Morus rubra), and 

 red alder (Alnus rubra) were prepared by Technician Frank Boryca 

 and the honey locust (Gleditsia iriacanthos) by Artist-Preparator 

 Samuel H. Grove, Jr. The branches of western hemlock (Tsuga 



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