= 
7; 
had learned on a visit to the Garden of our need of limestone, 
brought the matter to the attention of Mr. and Mrs. Bernhard 
Hoffmann, of the Berkshire Garden Center, Stockbridge, Mass., 
which is in a limestone area. Mr. and Mrs. Hoffmann at once 
became actively interested to assist us in securing limestone 
rocks. After unavoidable delays, and through the persistence 
of Mr. Hoffmann, we received the stones on September 28. 
They will be placed on the low embankment in the southern end 
of the Local Flora Section during the winter. The invaluable 
service of these three friends of another state has been acknowl- 
edged with the thanks of the Governing Committee and the 
staff. 
Moss Ravine.—Few, if any, botanic gardens have included the 
Bryophytes (liverworts and mosses) in their plantations, and 
yet these plants are of popular interest and the maintenance of 
such a collection is an advantage for school classes. In their 
appended reports Mr. Free notes the construction of the Moss 
Ravine on the south shore of the Lake, and Dr. Gundersen re- 
cords the initial planting and labeling. A re-entrant was ex- 
cavated in the northfacing bank, lined with glacial boulders, and 
furnished with an irrigation system to keep the surfaces of the 
rocks moist. The first year’s experience seems to indicate that a 
labeled collection of true Mosses, peat-moss (Sphagnum), and 
Liverworts can be successfully maintained under the conditions 
here provided. The collection was a center of much public 
interest during the year. 
Miscellaneous —In this appended report, Mr. Free notes the 
installation or first planting of the Medicinal and Culinary Gar- 
den, additional planting of the Wall Garden, Rose Garden, and 
Rose Arc, and other gardening and maintenance operations in 
the plantations. 
RESEARCH 
Botanical research falls naturally into one of two broad cate- 
gories: the study of plants in health, and the study of them in 
disease. Just asin human medicine the study of pathology must 
be based upon a knowledge of normal physiology and anatomy, 
so in botany the study of plant diseases rests upon a thorough 
knowledge of plants in health—their structure, physiological 
