REVIEWS. • 195 



author first treats of Bacteria and Myxomycetes, then of the various Fungi — 

 Phycomycetes, Ustilagineae, Urudineae, Basidiomycetes, and Ascomycetes. In 

 the introduction the author gives directions for using the microscope, and dis- 

 tributed throughout the text there are 190 good illustrations. We are informed 

 that the second volume will be published shortly. 



Practical Notes on Grasses and Grass-Growing in East 

 Anglia. By William Spencer Everitt ; edited by Nicholas Everitt. Cr. 8vo, 

 pp. 154. (London: Jarrold and Sons. 1896.) Price 2/- 



This book is written expressly for the Grass-grower, and contains many 

 valuable hints as to the kinds of grass to sow and what kinds of seeds should 

 be specially avoided. For those who do not know the various kinds of grasses 

 by sight, illustrations would have been a great acquisition. As it is, it will 

 doubtless prove of great assistance to the farmer. 



La Photomicrographie, Histologique et Bacteriologique. 

 Par J. Choquet. Royal Svo, pp. vii.— 149. (Paris: Chas. Mendel, 118 Rue 

 d'Assas. 1897.) 



In this fine work the author gives the results of many years' experience in 

 the delineation of histological subjects by means of photography, and very 

 carefully and fully describes the Cameras, Objectives, and Modes of Illumina- 

 tion suitable for this kind of work. A number of examples of Microphoto- 

 graphy are given, besides 72 engravings in the text, showing the various appa- 

 ratus. Without saying anything in disparagement of this work, we would 

 suggest to the author that he might find a better form of condenser than the 

 one he recommends on p. 64. The faint zone which he speaks of finding round 

 the images given even by apochromatic lenses would entirely disappear by using 

 from an achromatic substage condenser a cone of light of wider angle. 



Microscopic Researches on the Formative Property of Gly- 

 cogen. Part I., Physiological. By Charles Creighton, M.D. Royal Svo, pp. 

 viii.— 152. (London : Adam and Charles Black. 1896.) Price 7/6 net. 



Glycogen is that substance in the anim.al body which corresponds very 

 closely with the starch of plants and its appearance in the cells of different tissues 

 during development. The bookisillustrated by five well-executed coloured plates. 

 Chapter I. is an Historical Introduction ; II. treats of Methods and Material— 

 viz.. Microscopic Method, method of using iodine, preservation of sections, 

 colour of the iodide of animal starch, and reaction with methyl violet. The 

 remaining eleven chapters treat of glycogen as found in various parts of the 

 animal body. 



Microscopic Internal Flaws inducing Fracture in Steel. By 

 Thomas Andrews, F.R.S., F.C.S., M.Inst.C.E., etc. Svo, pp. 52. (London: 

 E. and F. N. Spon. 1S96.) 



A paper of considerable importance to Civil Engineers (reprinted from 

 Engineering) on Microscopic Internal Flaws in Steel, Railway Locomotive and 

 Straight Axles, Tyres, Rails, Steamship Propeller Shafts, and Propeller Crane 

 Shafts, and other Shafts, Bridge Girder Plates, Ship Plates, and other_ Engin- 

 eering Constructions of Steel. There are 30 micro, figures showing internal 

 flaws. 



Pioneers of Evolution from Thrales to Huxley, with an 

 intermediate chapter on the Causes of Arrest of the Movement. By Edward 

 Clodd. Cr. Svo, pp. xii. — 250. (London: Grant Richards. 1897.) 



The author here attempts to tell the story of the origin of the Evolution 

 idea in Ionia, and, after long arrest, of the revival of that idea in modern times, 

 when its profound and permanent influence on thought in all directions, and, 

 therefore, on human relations and conduct is apparent. The book is divided 



