"Dec. 15, 1971.] 229 
ie 
[Cope. 
On motion of Mr. Price, the following resolution was adopted: 
Resolved, That the Treasurer be authorized to pay to the Treasurer of 
the Fairmount Park Commissioners, three hundred dollars ($300) of the 
interest or rent lately received on the Michaux Legacy, to be applied to- 
wards the Michaux Grove and Michaux Nursery of Oaks in the Park, 
agreeably to the resolution of March 18th, 1870 (see page 312, Vol. XL., 
Proceedings A. P.§.) 
And the meeting was then adjourned. 
THE METHOD OF CREATION OF ORGANIC FORMS. 
By Ep. D. Cops. 
(Read before the American Philosophical Society, December 15th, 1871.) 
CuapTeR I.—On tHe Law oF ACCELERATION AND RETARDATION. 
Nature of law of Natural selection. Two kinds of evidence. Illus- 
tration. Examples from cervide, helicide, insects and men. 
CuHaprer I].—Tue Law or Reprririve Appirion. Segment and cell 
repetition. Illustration from limbs and vertebral column. A, On seg- 
ment addition; definitions. On repetition in bilateral and anteroposterior 
symmetry; in structure of compound teeth; in segments of articulata; 
limbs of Reptilia; brain of lamprey. B, On cell repetition; simple seg- 
ment a repetition of cells; simple diverticulum the same. The cell 
theory; the nucleated cell. OC, Synthesis of repetition. From unicell- 
ular to multicellular animals; simple repetition to compound repe- 
tition; <Actinia, Lepidosiren, Ichthyosaurus, Plesiosaurus, Tenia; the 
heart; mammalian teeth. D, On growth force; relation to other 
forces; definition. E, Direction of repetition, its location, centrifugal 
and longitudinal; movements longitudinal. Inheritance; its relation 
to growth force. 
CuarTer JII].—Tue Law or Use anpD Error. Points to be investi- 
gated. A, On the location of growth force. Relation of effort to use. 
Rudimental characters. Examples of growth under influence of phys- 
ical laws; Examples of colors under influence of light. Use and disuse 
of gills. Rattlesnake; horned animals. Teeth ofruminants. B, Change 
in amount of growth force. Local increase of growth force. Convo- 
luted structures; brain, teeth, cotyledons. Absolute loss of growth 
force. Teeth and toes of Ruminants; incisors of Rodents. 
CHarrer ITV.—On Grape INFLUENCE. A, On the nature of Grade 
influence or Bathmism. Definitions. In plants; in animals. Increase 
in time of Bathmism and growth force. Vital forces and vital influences. 
Thought force. Origin of Bathmism in time. B, Physiological origin 
of Bathmism. Function of nervous system in force conversion. Au- 
tomatic and habitual movements. Effect on nervous system. ©, The 
transmission of grade influence. Secretion in general. Spermatozodids. 
CHAPTER VY.—INTHLLIGENT SELECTION. Development of intelligence. 
Stimuli to use. Compulsion, Choice; Bees, Food, Rattlesnake; Change 
of color; Mimetic analogy, Examples. Development of character. 
