320 Journal of Applied Microscopy. 



vascular bundles, structure of foliage and floral-leaves, vegetative organs of 

 mosses, liverworts, fungi, lichens and algse, the reproductive organs of the same, 

 cell division and nuclear division, etc. This work is by far the most valuable 

 manual for the independent worker in microscopic branches of botanical work. 



Is an excellent manual for the indepen- 

 Bower and Vines. A Course of Practical In- .... 



stniction in Botany. London, Macmillan, dent Student. It contams directions 

 370 pp. 1885. S2.25 (?). for preparing specimens for study, 



microchemical reagents, general structure of the cell and its microchemical and 

 microphysical properties, studies of certain angiosperms, gymnosperms, pterido- 

 phytes, mosses, algas and fungi. The material needed is easily obtained and 

 the directions for work are very clear. 



^ ,^ ^r , , , r Contains directions for obtaining, pre- 

 Arthur, Barnes, and Coulter. Hand-book of . ,, 1 j 



Plant Dissection. Holt & Co., New York, serving, and studying a well-selected 

 1893. 256 pp. 2 plates; Si. 20. series of plants, including green slime 



{Frofococcus), oscillaria, pond scum {Spirogyra), white rust {Cystopits), lilac 

 mildew, liverwort, moss, maiden-hair fern, Scotch pine, field oats, trillium, 

 and shepherd's purse. Both gross and microscopic anatomy are studied. 

 References to standard literature assist the student to extend his investigations. 



Clark. Practical Methods in Microscopy. While this is a work on general micro- 

 Boston: Heath & Co., 1896. 261pp. 52 ^„_ •„ ,-npthnds it rnntains several 

 wood-cuts, 8 plates of photomicrographs; scopic metnoQs, it contains several 



S1.60. chapters of interest to the botanist. 



Zimmerman. Botanical Microtechnique, a This work consists of a description of 

 handbook of methods for the preparation, ^i 1 r • ,.■ ^- 4.1 



staining, and microscopical investigation of methods of investigating the various 



vegetable, structures; translated by J. E. component parts of cells and the pro- 



"aTp'^-figuS'.fc'so: "°" '' ""■■ ""'■ ducts of cdlular activities in plants. 



CHARLES WRIGHT DODGE. 



University of Rochester. 



Cements for Fluid Mounts. — In the Journal of the Orekett Microscopical 

 Club, Mr. Rousselet once more calls attention to that never-failing source of 

 trouble among microscopists — the failure of cements enclosing mounts in watery 

 and other media. Mr. Rousselet finds that the varnish sold as " Spirit-proof 

 Cement," while answering well for media containing alcohol, fails completely to 

 efifectually seal non-alcoholic preservative fluids. It would appear that gold 

 size, or cements having this substance as their basis, must be regarded as the 

 most hopeful. It is rather suggestive that a series of slides which have stood 

 the test of many years uninjured were mounted in the first instance with a small 

 bubble of air purposely enclosed in each with the object of allowing for expan- 

 sion consequent on variations of temperature. Most of the slides mounted in 

 such cells, that we have seen, from the Jersey Biological Station, contain bubbles 

 of air, but we are not aware whether these were included purposely or not. If 

 so the plan can hardly be considered so satisfactory in its working with the 

 Jersey mounts, as in several in our possession the bubbles have grown so large as 

 to seriously interfere with the objects. G. H. Bryan. 



