The Garden Magazine, November, 1920 
139 
MEMORIAL TABLET TO HUMPHRY MARSHALL 
Erected 1913 by The Chester County Historical Society. The large trees in the background 
were planted by Marshall together with the old Box in front of the house seen to the right 
The Chester County Historical Society erected a memorial 
stone in front of the main entrance to the arboretum with this 
inscription: 
The Home and Arboretum of 
Humphry Marshall 
Early American Botanist 
1722-1801 
Marked by the Chester County 
Historical Society 1913 
There are a few other extant memorials of this botanist beside 
the house, his arboretum, and the bronze tablet. Descendants of 
his are in possession of his eyeglasses, his knee buckles, his por- 
ringers, and the tankard of his first wife. A microscope of an- 
tique form presented to him by Dr. John Fothergill is 
in existence. The tube of the microscope and its stage are raised 
on a tripod. Of his library the following books are in the pos- 
session of the members of the Marshall family: Mystogigus 
Poeticus or The Muses Interpreter, MDCXLVIII; A New and 
Literal Translation of all the Books of the Old and New Testa- 
ment, 1764; Directions for Bringing over Seeds and Plants from 
the East Indies and other Distant Countries in a State of Vege- 
tation, London MDCCXX 1 ; Astrologia Gallica, 1 66 1 ; Manu- 
script List of Trees sent by Humphry Marshall to West Chester. 
EXPERIENCES WITH TOMATOES 
ADOLPH KRUHM 
Some Observations on the Behavior of Standard Varieties in Regard to 
Methods of Cultivation — The Matter of Blight Resistance and Pruning 
the hot, moist air arising from the soil which it particularly seems 
to resent. Years ago when this peculiar leaf-action first came to 
my notice, I tried spraying — but without result; on the other 
hand a few days of cloudy or cool weather generally remedied 
the trouble; this rather conclusively indicated that blight was 
not its cause. The trials embraced nearly one hundred distinct 
varieties and strains of Tomato, part staked and pruned, and 
part permitted to spread on the ground; the reaction of the 
plants to weather conditions was the same in both cases. 
HE curling of the leaves of Tomato plants can, 1 believe, 
be explained on an entirely different basis from that 
suggested in the October Garden Magazine (page 
27). In trials covering a period of ten years under 
widely varying conditions of soil and climate, 1 have never found 
the pruning of a plant to have any effect upon the root system. 
My observations have led me to the conclusion that the curling 
of the foliage is an automatic movement for protection on its 
part, an endeavor to present the smallest possible surface to 
