39 
(4) Cytology of Sports. Are there nuclear differences cor- 
responding to the wide external differences among these muta- 
tions? The serial nature of much of this Boston Fern mutation, 
the repetition of definite new types, the parallel variati all 
these facts arouse interest in the possibility of correlated cytologi- 
cal differences. 
(5) Cooperation with Florists. ‘“ What Boston Fern is best?” 
was used as the title of my series of articles in the Florists’ Ex- 
change and in other periodicals. In that connection sample sets 
of named varieties were distributed to a wide list of commercial 
florists and to agricultural colleges and experiment stations. A 
continuation of this cooperation would also afford the oppor- 
tunity, if properly organized, for the thorough testing, horti- 
culturally, of a large number of old and new varieties, for which 
the greenhouse space at the Botanic Garden is necessarily in- 
sufficient, as well as contributing to the advancement of horticul- 
tural knowledge. 
(6) Further Studies in the Variation of Boston Fern and Other 
Fern Types. The potentialities of the production of new types in 
the Boston Fern series are far from exhausted. In the spore- 
fertile group, it would be possible to raise new distinct types by 
the score within the next year. At present there is a considerable 
number of such forms, raised at the Garden, both of the fertilis 
strain, and among the bud-sports, which only wait for the time 
needed to prepare descriptions and discussion for publication. 
Regarding my own connection with the lines of study thus 
analyzed, I am hopeful that opportunity may offer which will 
allow me to take leave of school work for a term or two and 
thus to give more concentrated attention to the problems sug- 
gested. At the same time, there would be involved considerations 
of greater expenditure by the Botanic Garden for publication, 
illustration, greenhouse space, gardeners’ time. For my own 
time, I cannot speak definitely, except that it would be necessary 
for me to make up any difference between my regular schoo! 
salary and that which I might receive on the basis now allowed by 
the Sabbatical leave arrangement of the city Board of Education 
I have hoped that an arrangement along these lines might be pos- 
sible with the Botanic Garden, 
