The Philippine journal of science. [Vol. 67, no. 1]

57, 4

Books

435

manufacture of friction elements and adhesives, latex treatment
of rugs, and the miscellaneous applications of latex are covered
in the last part of the volume.
On the whole the present volume should be useful to workers
in the field of rubber not only as a source of condensed information but also as an up-to-date reference. The wealth of the
bibliography at the end of each chapter makes it a handy reference guide for those who desire to go into the literature of
latex in greater detail.-F. L. R.
The Bed-Bug; its Habits and Life-History and How to Deal with It. By
A. W. McKenny-Hughes. London, Printed by Order of the Trustees
of the British Museum, 1937. 4th ed. 19 pp., front., illus. Price, 6d.
This pamphlet is a practical account of the bedbug, one of
the most widely distributed house pests known. It takes up
the external anatomy of the insects, its blood-sucking apparatus,
life history, habits, mode of dissemination, relation to disease,
and methods of control. Under the last item the eradication
of minor and major bug infestations are discussed, and the
promising results obtained with the use of heavy naphtha, a
fumigant which is apparently not poisonous to human beings,
are mentioned.-M. T.
An Introductory Course in Science for Colleges. I. Man and The Nature
of His Physical Universe. II. Man and the Nature of His Biological
World. By Frank Covert Jean, Ezra Clarence Harrah, and Fred
Louis Herman. With the Editorial Collaboration of Samuel Ralph
Powers. Boston, Ginn and Company, c1934. 2 vols. Price, $4.50.
Discussions on space and cosmic bodies are presented in a
fascinating way in volume I of this work. The principal types
of force and energy, like gravitation, heat, magnetism, electricity, and radiant energy, are treated from the point of view of
pure science and their practical applications to human living
through the use of machines and inventions. This volume ends
with a study of the earth and its characteristics and features
which make life upon it possible.
Plants, animals, synthesis and decomposition, evolution, and
adaptation, genetics and heredity, and man's cultural development are discussed in volume II. Biology has changed man's
ideas as to the nutritional needs of the body, the nature and
extent of hormone regulation, and the means adopted by the
organism to combat disease.
New discoveries and the further application of scientific
principles to the needs of modern life affect fundamentally both
the content of the curriculum and the methods of instruction.