A general explanation of the theory of etheric waves furnishes a foundation for an explanation of the nature of waves in general, of light waves of electrical vibrations, and apparatus for producing them. “He discusses electric discharges, the action of ultra violet rays, direct and alternating current effects.... He explains the workings of a variety of oscillating current generators and then passes to electric wave detectors—the best known to the public being the Marconi ‘coherer.’” (N. Y. Times.)
Engin. N. 56: 417. O. 18, ’06. 100w.
“Aims to be—and seems to succeed in being—a practical treatise on wireless telegraphy so written so as to be of use both to the expert in scientific matters and to the tyro who has everything to learn.”
+ N. Y. Times. 10: 733. O. 28, ’05. 330w.
“In the opinion of the reviewer the illustrations ... constitute the most useful part of this book. In the hands of one whose familiarity of the subject enables him to interpret the many obscure passages and to distinguish the inaccurate statements from those that are correct, Mr. Collins’s book may in some cases be found useful.” Ernest Merritt.
– – + Phys. R. 22: 63. Ja. ’06. 500w.
“He covers the whole field briefly but satisfactorily. In addition to being practically the first book in this field, Mr. Collins’s is well prepared and authoritative.”
+ + Pub. Opin. 40: 60. Ja. 13, ’06. 170w.
Collins, John Churton. Studies in poetry and criticism. $2.50. Macmillan.