280 Messrs. Parker and Jones on affected ; and there is the Burmese family observed "by succes-sive ambassadors at the court of Ava, where father, daughter, and grandson had the body, with the exception of the feet and hands, covered with long, straight, silky hair. And from these and many similar cases it would seem a natural inference that, just as the bones and dermal covering vary with altered nutrition, so also do all other parts of the organism, which are less easily observed. In conclusion, it has been seen that growth depends upon a kind of organic dialysis, called nutrition, which is sustained throughout the body by the mechanical actions of the parts of the organism which produce pressure and tension, while the direction in which this action is manifest is due to the com-mon plan on which the individual is built. And the amount of the change is due to the change of structure produced in the individual by changed function inherited in the offspring, and partly by the realization in the offspring of such structures as the parent's functions tended to produce, but which its common plan rendered impossible for itself to develope. And with this condition of variation, the general inference from the phenomena of growth is, that the form of the whole skeleton, as of every bone, is due to the mechanical strains to which it is subjected, since these govern its nutrition. [To be continued.] XXIX. — On the Nomenclature of the Foraminifera. By W. K. Paekee, F.R.S., and Prof. T. Rupeet Jones, F.G.S. [Continued from p. 230.] NummuUtic Limestone of Gyzeh and Mokattam *. (Abhandl. Berl. Akad. Wiss. 1838, p. 93, tables xiv. xvi. pi. 4. fig. vii.) PI. xxiii. fig. IjMiUola sjyhoiroidea ("compare Cenchridmm oliva, 1843 "), and fig. 2, M. ovum^ are both Lagena ghhosa ; but the second specimen is longer in proportion (oval-oblong). Fig. 3, Textilaria glohidosa (1838), a, fig. 4, /3. obtusa, fig. 5, 7. amplior^ fig. 6, h. dilatata^ are Text, glohulosa^ Ehr. Fig. 7, T. linearis (" T. striata^ 1838, is known only in fragments "), fig. 8, Grammostomum polytheca (?), figs. 9 & 10, Gr. a^gyp-tiacum^ figs. 11 & 12, Gr. angulatum^ fig. 13, Gr.falx, fig. 14, Gr. siculum (?), fig. l5, Gr. increscens^ fig. 16, a, J, Gr. poly-* See Mr. Bauerman's section of the Mokattam Cliftj Quart. Journ. Geol. Soc. London, vol. xxv. p. 40, where references are made to the works of Figari Bey and Oscar Fraas. See also Russegger's ' Reisen in Europa, Asien, und Afrika,' «fec. 5 vols, and Atlas, 1841-42.
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