Linnean Society. 235 
- Baron Jacquin possessed an amiable and obliging’ disposition, 
and was distinguished for his urbanity and kindness, especially to 
strangers ; and few cultivators of science visited the Austrian capi- 
tal without partaking of his good offices and hospitality. He died 
at Vienna, on the 10th of December, in the 74th year of his age. 
. The President also announced that seventeen Fellows and four 
Associates had been elected since the last Anniversary. 
It was then moved by the President, and unanimously agreed to 
by the meeting, That the cordial thanks of the Society be given to 
Dr. Boott on his retirement from the office of Secretary, for the in. 
cessant attention which he has shown to the duties of that office, and 
the ability, zeal, and urbanity with which he has discharged those 
duties. 
At the election, which subsequently took place, the Lord Bishop 
of Norwich was re-elected President; Edward Forster, Esq., Trea- 
surer; John Joseph Bennett, Esq., Secretary ; and Richard Taylor, 
Esq., Under-Secretary. The following five Fellows were elected 
into the Council in the room of others going out; viz. Thomas Bell, 
Esq., George Loddiges, Esq., Gideon Mantell, Esq., LL.D., Richard 
Horsman Solly, Esq., and Sir George Thomas Staunton, Bart. 
June 2.—Mr. Forster, V.P., in the Chair. 
Mr. George Francis, F.L.S., exhibited a portion of the trunk of 
the Lepurandra saccidora (Graham Cat. Bomb. Pl. p. 193.), from 
Western India, of the bark of which sacks and bags are made. 
Mr. Rauch exhibited a specimen of the fruit of Salisburia adianti- 
Folia, which ripened last year in the Imperial Gardens at Schen- 
brunn, near Vienna. 
Read, ‘‘On the reproductive Organs of Equisetum.” By Mr. 
Joseph Henderson, Gardener to Earl Fitzwilliam, at Milton Park, 
communicated by the Rey. M. J. Berkeley, F.L.S. Mr. Hender- 
son’s obseryations were made on Equisetum hyemale and other spe- 
cies, and embrace the entire period-of development of the spore and 
of the thece containing them. The theca is in the first instance 
filled with cells of extreme tenuity, in the interior of which the 
spore afterwards take their origin. After the appearance of the 
spore the containing cells gradually become thickened, and sepa- 
rate from each other; and at a still later period their walls are 
marked by spiral sutures, by means of. which they are subdivided 
into two narrow bands with broad and rounded ends. As the sporee 
approach maturity these bands separate at the sutures, and the con- 
taining cell is thus resolved into its component parts, the supposed 
filaments and anther of Hedwig. The sporze, when ripe, have a 
double membrane, which is rendered evident by the addition of 
tincture of iodine. In the immature state of the thece, up to the 
time when the spiral lines become distinctly marked on the integu- 
ment of the spore, they form transparent membranous reticulated 
bags, the meshes of which have different directions in different 
parts. When the spore have attained their full size, a new deposit 
of vegetable matter is added, and spiral vessels are formed within 
the flattened cells of which the membrane is composed, and the 
