370 Linnean Society. 
of woody fibre. These latter, being destined to supply the scales, 
first pursued a course parallel to the axis, and then turned outwards 
to the bases of the scales. 
The following are the dimensions of this magnificent plant, ex- 
pressed in metres and centimetres, one metre being equal to 39°371 
English inches :— 
Dimensions of the trunk. MI IG: 
Length ....ccccsssecscsesseccescscccncscnceos rap nonddnapocadoneachaad 2 730 
Girth at the narrowest part .....cscceeeseeeeceeerteeeeteerenenenes 1 2 
Girth just below the leaves ......ssscssesecsecerenceeeneseeenes 1 8 
Girth at the thickest parts, viz. at the ground and a little 
e LG 
above themmiddles cs. cecececies cee ceccseineeeccementcls Baan enlects 
Dimensions of a large leaf. 
Length of leaf, including foot-stalk — ...esesseeeseeeree eee Sea L- <0 
Length of foot-stalk .......cccsececeeeseeceeeeeeeeeeeeeeeeneueaeenes 25 
Length of largest leaflets .........sceeeeeeseeneeeeeeeeeeeeesensens 14 
Greatestibreadth Of Gitta: s.. cscssniceeuate moet oeaetids ssfisicctesiieasans 34 
Dimensions of the cone. 
Length, including peduncle .........ccssseseeeceeeeeeeces eneeneens 58 
From the apex to the base, measured outside .......s0sseeee 65 
From the apex to the termination of the smaller rhomboids 17 
Gixthmmithenmiddl Greeeasccccccccucecesocemacsieslethe sissies. sens 92 
Girth at the base ......... Vacdncis cists eminee sobesacs cllpmrccaccemeat 50 
Greatest girth of the axis..... SbacaqnosAccQuoSaNAddoonucdonduIG0d0¢ 26 
Transverse diameter of a rhomboid .........+++.+- Seemecciancscees 5 
Wertical diameter Ondittore: «cc. c.cenecacccetececcetnecceececeans 3 
In relating the history of this plant, it is to be observed, lastly, 
that some time before the scales began to fall from the axis, a set of 
young leaves made their appearance on one side of its base. They 
were invested with a thick, silky, olive-coloured pubescence. They 
at first took a horizontal direction, but on the removal of the cone 
their tendency was upwards. 
Encephalartus horridus.—A male plant flowered in 1839 at Kin- 
mel Park, the seat of Lord Dinorben, who presented the cone to the 
Linnzan Society. (Proceedings, p. 9; Annals of Nat. Hist. S. 1. 
vol. ii. p. 58.) 
A female bore fruit at Chatsworth in 1846, and is now in fruit 
again. Another female, formerly in the garden of the Horticultural 
Society at Chiswick and now in Mr. Yates’s possession, has twice pro- 
duced a cone supported by a short peduncle. Among the distinctions, 
to which allusion has been made already, between the genus Cycas and 
the other genera of the same Natural Order, it is remarkable that the 
female cone of Cycas is sessile, and that after it has arrived at ma- 
turity its scales diverge and assume a tendency to a horizontal di- 
rection, corresponding with that of the leaves; after which the next 
set of leaves rises from the centre of the cone. In other Cycadee, 
the cone, whether male or female, is pedunculated, and the new tuft 
of leaves appears by the side of the peduncle. 
