p.3

[blue ruled paper; worn embossing at u.l.: SUPERFINE LAID PAPER [scrolling banner surrounding text]; handwritten page, verso, visible]

Heliolites spinipora, Hall [James Hall Jr. (September 12, 1811 – August 7, 1898) was an American geologist and paleontologist.]. Pal. of N.Y.
Vol 2 p 131 pl 36 fig 2

Turbinate, pyriform, hem —
ispheric and spheroidal masses, formed
of diverging cylindrical tubes with
cellular interspaces, often rapidly increas-
ing by interstitial additions of new
tubes, and thus becoming spheroidal;
openings of the cells upon the surface
circular, with twelve short rays, not fonflu-
ent; spaces between the openings cellular;
tubes transversely septate, and externally
marked by strong longitudinal striae.
A longitudinal section shows cellular
interspaces, and the interior of the tubes
often crowded by spiriform rays near -
ly meeting in the centre.