WILLIAMSON : MEMOIRS AND PAPERS. 
107 
On some Histological features in the Shells of Crustacea. Journ. 
Micros. Soc, vol. viii., 1S60. 
The Anatomy and Physiology of Foraminifera. Popular Science 
Review, vol. iv., 18G5. 
On a Cheirotherian Footprint from the base of the Keuper Sand- 
stone of Daresbury, Cheshire. Geol. Soc. Quart. Journ., vol. 
xxii., 1866 ; and Phil. Mag., vol. xxxii., 186G. 
The Amoeba : its structure, development, and habits. Popular 
Science Review, vol. v., 1860. 
The Connnon Fresh AVater Sponge : Spougia lluviatilis. Popular 
Science Review, vol. vii., 1868. 
Contributions towards the History of Zamia gigas, Ldl. and Htt. 
Trans. Linn. Soc, vol. xxvi., p. 668, seq. 1868. 
On the structure of the woody zone of an undescribed form of 
Calamite. Mem. Man. Lit. and Phil. Soc, ser. 3, vol. iv., 
p. 155, seq. 1868. 
On the structure of an undescribed type of Calamodendron from 
the Upper Coal Measures of Lancashire, 1868. Man. Lit. and 
Phil. Soc Proc, vol. viii., 1869. 
Additional Note on the structure of Calamite. Man. Lit. and Phil. 
Soc Proc, vol. viii., 1869. 
On the structure and affinities of some Exogenous Stems from the 
Coal Measures. Mou. Micros. Journ., vol. ii., 1869. 
What is Bathybius ? Pop. Sc. Rev., vol. viii., 1869. American 
Nat., vol. iii., 1870. 
On the organization of the Stems of Calamites. Brit. Assoc. Rep.. 
vol. xl., 1870. Man. Lit. and Phil. Soc Proc, vol. ix., 1870. 
On the structure of the Gizzards and Teeth of the Rotifera. Man. 
Lit. and Phil. Soc Proc, vol. ix., 1870. 
On the Sphoerosira volvox, Ehrenb. Pop. Sc. Rev., vol. ix., 1870. 
On a new form of Calamitean Strobilus from the Lancashire Coal 
Measures. Mem. Man. Lit. and Phil. Soc, ser. 3, vol. iv., 
p. 248, seq., 1870. 
The Natural History of Paving Stones. Lecture given at Hulme 
Town Hall, Manchester, February, 1871. John Hey wood, 
Deansgate, Manchester. 
