328 Scientific Intelligence. 



and psychical peculiarities, with the gradual emancipation of 

 mankind from persecution and superstition. 



The second part of the book treats of the cell doctrine, organic 

 evolution, and current problems and methods of zoological 

 science, showing the profound influence which recent biological 

 discoveries are having upon the philosophy of the everyday life 

 of all classes of the people. 



In the third part into which the subject is conveniently divided 

 the importance of science in the solution of our present social 

 problems is discussed and the dependence of the material and 

 spiritual welfare of the' race on continued scientific research is 

 emphasized. The author holds that the cure for the present 

 widespread social unrest and the solution of the complex prob- 

 lems in this reconstructive period will rest upon the recognition 

 of nature's laws as the guiding principle in the ordering of all 

 human affairs. 



The book is thoughtful and scholarly, well arranged and pleas- 

 ingly written ; its reading will give one a more dignified view of 

 science as applied to human welfare, with suggestions as to how 

 he may aid in social progress. w. r, c. 



3. The Biology of the Sea-shore; by F. W. Flattely and 

 C. L. Walton, with an introduction by J. Arthur Thomson. Pp. 

 xvi, 336, with 16 plates and 23 text-figures. New York, 1922 

 (The Macmillan Company) . — The first two decades of the present 

 century may be looked upon as the period of experimental biol- 

 ogy, when the most important discoveries have been made in the 

 laboratory. More and more, however, in recent years there has 

 been a return to out-of-doors nature and a reawakened interest 

 in old-fashioned natural history, now refined and dignified by the 

 term "ecologj^. " 



This book is one of the first in several years to deal with the 

 associations of organisms found along the shores of the seas, but 

 the subject is treated in a much broader way than would have 

 been possible without the knowledge gained by the intensive 

 laboratory studies of past years. 



How the hundreds of species of animals and plants to be found 

 in even a limited area between tide-marks are associated together, 

 how their distribution is determined by the physical characteris- 

 tics of the shore, how the animals are provided with means for 

 attack and defense, how they may regenerate their missing parts 

 after injury or spontaneous fragmentation, how some forms are 

 dependent upon others for food and protection, the wonderful 

 adaptations for locomotion of the various types for securing food, 

 for respiration under different conditions, their nervous organ- 

 ization and behavior, their reproduction and growth, their influ- 

 ence on the human welfare — these are the interesting topics 



