104 
is also to be observed, that these fronds, about 110 in number, are 
closely set and spirally arranged upon a very short axis. The dis- 
tance between them and the fronds of 1845, is about 8 inches or 20 
centimetres, showing an elongation of the trunk of 1 inch for each 
year. 
Miquel mentions only one male plant, viz. that at St. Petersburg : 
and in this country it cannot be ascertained that more than two 
males have produced cones, to wit, those in the Botanic Garden 
at Sheffield, and that belonging to Henry Ricketts, Esq., at the 
Grove, Brislington, near Bristol. The Sheffield plant has now flow- 
ered thrice. Its first cone, produced in England, is preserved in the 
Museum at York; its second belongs to the Royal Botanic Society 
in the Regent’s Park; its third appeared this year, and, that it might 
be suitably displayed, the whole plant was transported to York last 
summer and was there publicly exhibited. It is now taken back 
to Sheffield. It appeared that this male was purchased by the late 
Earl of Derby, formerly President of the Linnean Society, about 
A.D. 1825, together with the female already noticed, which is a 
noble specimen, still preserved at Knowsley, and which bore fruit 
in 1850. The Brislington specimen has been in the possession of 
its present owner about half a century, and may be between fifty and 
sixty years old. In 1847 it raised a cone or spike 58 c. (¢. e. 23 in.) 
long, which is agreeable to the ordinary size and form of this 
production ; and now it has raised a second, but with a remarkable 
anomaly in its development. This is not half the length of its 
predecessor, and, instead of being drawn to a point, is curtailed and 
terminates abruptly in a tuft of barren scales, resembling those 
which, as intimated above, always precede the rise either of a crown 
of leaves or of a fruit-bearing cone. A check in the development of 
the cone appears to have been sustained, preventing the further 
prolongation of its axis, and at the same time causing its scales to be 
no longer dilated and antheriferous. 
Macrozamia spiralis.—Mr. Yates next exhibited a small, but per- 
fect specimen of the cone of a male plant, which he lately imported 
from Sydney. This is probably the first time that a Macrozamia has 
produced acone in this country. Together with the recent cone 
Mr. Yates showed also two old specimens, which had been sent with 
the living plant, by W. 8. MacLeay, Esq., F.L.S., and which that 
gentleman obtained near his own residence at Elizabeth Bay. One 
of these two specimens is very remarkable in consequence of being 
