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the Memoirs of the New York Botanical Garden, consisting 
of the papers presented at the Garden’s Twentieth Anni- 
versary Celebration, September 6 to 11, 1915. The volume 
comprises 592 pages and 43 plates. In codperation with 
Dr. Harold L. Lyon, Dr. Howe contributed a list of the 
algae of Palmyra Island to an account of the flora of this 
island published in Honolulu. In collaboration with Mr. 
F. S. Collins, he has published “‘Notes on Species of Haly- 
menia,” and, in collaboration with Dr. W. D. Hoyt, 
“Notes on some Marine Algae from the Vicinity of Beau- 
fort, North Carolina.” He has also published “A Note 
on the Structural Dimorphism of Sexual and Tetrasporic 
Plants of Galaxuara obtusata’? and has prepared a paper 
on the calcareous algae of Murray Island, Australia, for 
publication by the Carnegie Institution of Washington. 
He continued to act as one of the editorial board of the 
Torrey Botanical Club, and gave two lectures in the Satur- 
day afternoon lecture courses conducted by the Garden. 
Dr. Fred J. Seaver, Curator, continued in charge of the 
fungous collections. A number of short papers were pub- 
lished, including a list of Bermuda fungi containing de- 
scriptions of three new species. ‘The manuscript for one 
part of North American Flora was completed and a second 
part is well under way. The collecting of certain groups 
of fungi in the vicinity of New York was carried on during 
the summer and autumn. Some time was spent in col- 
laboration with Mr. J. F. Stevenson in the preparation of 
a check list of Porto Rican fungi. Two lectures were given 
in the regular Saturday afternoon lecture course. Work 
on local insect pests was continued and one paper and 
several notes were published in the Garden Journal on this 
subject. 
Mr. Percy Wilson, Associate Curator, was mainly oc- 
cupied with herbarium work in determining and distribut- 
ing specimens of West Indian plants. During February 
and March, he accompanied Dr. and Mrs. N. L. Britton 
to Cuba and to the Isle of Pines where a large and valuable 
