Ze 
win took most of his exercise and did much of his thinking, and 
the old study in which the Origin of Species was written. The 
house and grounds were presented to the British Association for 
the Advancement of Science by Mr. George Buckston Browne, 
during its meeting in Leeds, in 1927. Many articles of association 
with Darwin have been assembled here and are being added to 
from time to time by gift. 
In may be incidentally mentioned in this connection that while 
in Cambridge I secured for our library an autographed letter of 
Darwin, as well as other autographs and several unusual portraits 
of botanists. 
After the conclusion of the Congress in Cambridge, the delegates 
were entertained at Kew, and also at the Natural History Museum, 
South Kensington. The botanical treasures exhibited at the Mu- 
seum included the herbarium of Sir Hans Sloane, specimens of the 
herbarium of Linnaeus, a collection of 3000 specimens forming 
the types of Linnaeus’s Hortus Cliffortianus ; the European herba- 
rium of John Ray (1627-1705) ; American plants collected by John 
Bartram (1699-1777), founder of the first botanic garden in 
America; collections of William Bartram (1739-1823), including 
the only known specimen of Franklinia altamaha Bartram (Gor- 
domia pubescens L’Heéritier) ever found growing wild. The tree 
is now apparently extinct in the locality where Bartram found it. 
(Several specimens are growing in the Brooklyn Botanic Garden.) 
Also, the herbarium of Philip Miller (1691-1771), curator of the 
Chelsea Physic Garden; manuscripts of Robert Brown (1773- 
1858) ; drawings by Schleiden (1804-1881), founder (with the 
zoologist Schwann) of the cell-theory; a collection of microscopic 
slides of the mycologist, de Bary (1831-1888) ; Peter Collinson’s 
account of the first introduction of American seeds into Great 
* used by Robert Brown and (pos- 
Britain, and the “ microscope ’ 
Is. 
sibly) by the use of which he discovered the nucleus in cel 
Plants from the Chelsea Physic Garden were also exhibited. In 
1712 Sir Hans Sloane bought the Manor of Chelsea and with it the 
Physic Garden, founded by the Apothecaries’ Company in 1672. 
xroperty over to the Apothecaries in 1/22 for an 
He turned the | 
yer condition that 
annual payment of five pounds, and on the furtl 
the Apothecaries should, every year for forty years, deposit with 
