e
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molds. His presentation will include recent evidence from
his laboratory concerning the chemical identity and action
of “acrasin,” the chemotactic agent which signals the individual, free-living amoebae to aggregate and to differentiate and organize into a multicellular organism.
W. John Smith, R. Allen, Beatrice T. Gardner, Vincent G.
Dethier Thomas Eisner, and Edward O. Wilson.
present new experiments from his laboratory which are
Terrestrial Adaptations in Crustacea (27-29 Dec.)
findings indicate that the same physical principles which
operate to control the self-assembly of macromolecular
subunits into higher cell or viral structures also operate to
Dedicated to the memory of Warren J. Gross, a leading
investigator in the field of crustacean terrestrial adaptations.
Malcom S. Steinberg, also of Princeton University, will
an extension of earlier experiments by Holtfreter. The
guide major steps in the organization of the vertebrate body
during embryonic development.
Viktor Hamburger, Jane M, Oppenheimer, J. T. Bonner,
Theo M. Konijn, Maicoim S. Steinberg, and J. Lawrence
Kelland.
Refresher Course: Principles of Ecology for
Bio-Environmental Engineers (27 Dec.)
the neural mechanismsare all being investigated intensively
in both vertebrates and invertebrates.
Neal A. Weber, Robert Capranica, William F. Martin,
Arranged by Dorothy E. Bliss and Linda Habas Mantel
(American Museum of Natural History, New York City).
The Transition from Water to Land in Three Major
Groups.
Adaptations Concerned with Osmoregulation and Water
Balance.
Adaptations Concerned with Temperature, Respiration,
and Circulation.
Adaptations of Metabolism.
Arranged by Rezneat M. Darnell (Marquette University)
and Theodore A, Olson (University of Minnesota).
Adaptations
of
Water
Conservation
and
Behavior.
Adaptations of Sensory Perception and Behavior.
In the past 5 years there has been a marked rise in
The community of ecologists is becoming progressively
concerned over the impact of civilization upon natural
ecosystems. Increasing population pressure, together with
expanding technology, are posing threats whose directions
interest in the adaptive characteristics of crustaceans that
have invaded the intertidal zone and the land above the
but on the worldwide scale. Few ecologists, however,
are in positions to retard the effects of environmental modification which are becoming so apparentto all.
The community of environmental engineers is itself the
agent which plans and executes many environmental mod-
Mathematics—A. M. Gleason: “Symmetry, the Scientist’s Friend,” 30 Dec.
Physics—-W. W. Havens: “Nuclear Physics Research
Vice-Presidential Addresses
and magnitudes must be assessed, not only on the local,
ifications, which provides for the wastes of civilization,
and which carries out programs for the assessment of
tolerance Jevels for environmental disturbance. Increased
communication between the ecologist and the environmental
engineer is essential to the optimal long-term management
of our limited environmental resources.
The present refresher course is an attempt to strengthen
this dialogue. Principles of community and ecosystemecology will be presented in some detail and their engineering implications discussed. The community understress
will be examined from both ecological and engineering
standpoints.
George L. Clarke, Robert G. Wetzel, David E. Reichle,
Thomas D. Brock, and Frank B. Golley.
Eugene P. Odum, George M. Woodwell, Robert H.
Whittaker, Richard §. Englebrecht, Willis E, Pequegnat,
Stanley I, Auerbach, and Frederick E, Smith.
Alfred F. Bartsch, Howard T. Odum, Gordon M. Fair,
John E. Cantion, and Conrad P. Straub.
Animal Communication (28 Dec.)
Arranged by Neal A. Weber (Swarthmore Coilege).
Animal communication may take auditory, visual, tactile,
biochemical or some combination of forms, both between
members of a species or between unrelated species. The
organism receives information from the external environment,
a signal is
made,
and
the
animal perceives
it,
responding appropriately.
The advent of refined instrumentation and morecritical
approaches have
markedly increased our knowledge of
animal communication. The biochemistry of the signals,
their origins and methods of transmittal, the receptors,
8 DECEMBER 1967
as a Source of Technology,” 29 Dec.
.
Chemistry—H. F. Mark: “Are There Limits to
Polymer Research?” 27 Dec.
Geology and Geography—Joe Webb Peoples: “Geology in State Governments,” 27 Dec.
Zoological Sciences—C. §. Pittendrigh: “Time and
Life,” 29 Dec.
Botanical Sciences—W. C. Steere: “The Evolutionary
Position of the Bryophyta,” 29 Dec.
Anthropology—Alexander Spoehr: “Anthropology Today,” 27 Dec.
Psychology—L. J. Postman: “Mechanisms of In-
terference in Forgetting,” 30 Dec.
Social and Economic Sciences—David B. Truman:
“The Social Sciences: Maturity, Relevance, and the
Problem of Training,” 29 Dec.
History and Philosophy
of Science—P.
J.
Caws:
“Structure, Statistics, and the Logic of Discovery,”
30 Dec.
Dentistry—L, R. Cahn: “Global Oral Pathology,”
28 Dec.
Pharmaceutical Sciences—Curtis Waldon: “Pharmacy
and the Developing Federal Programs,” 29 Dec.
Industrial Science—Ellis A. Johnson: “Ethical Dilemmas in the Applications of Operations Research
toward the Organizational Behavior of Very Large
Systems,” 28 Dec.
Education—Herbert A. Smith, “Fallout from a Dec-
ade of Criticism in Science Education,” 27 Dec.
information
and
Communication—P.
V.
Parkins:
“Confessions of a Communications Non-Conformist,”
29 Dec.
Statistics—G. E. P. Box: “Science and Statistics,” 29
Dec.
‘4
1331
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