Mr. Faraday on Chemical Manipulation. 275 



shade;" and perhaps all plants which present a large reflecting 



surface of foliage to the sun, are content with a smaller share 



of his direct rays. These observations attended to, sun-shades 



may be applied for occasional use, and with the plants at a 



proper distance from the glass, will certainly secure them from 



all the inconvenience of such buildings, while none of the 



advantages are lost. 



The kitchen-garden range of buildings includes pine-stoves, 



vineries, houses for peaches, and nectarines, figs, and cherries, 



hot-walls, pits for succession pines, melons, cucumbers ; besides 



store pits for roots, tender vegetables, salading, &c., as well as 



frames for many purposes of cultivation. Mushrooms are 



usually raised in sheds behind the houses. The hot-houses are 



also used for growing early culinary vegetables, and small fruits 



in pots. 



[To be continued.] 



Chemical Manipulation, being Instructions to Students in 

 Chemistry/, on the Methods of performing Experiments of 

 Demonstration, or of Research, with accuracy and success 

 By Michael Faraday, F.R.S., &c. 



We will not positively assert that no one except Mr. Faraday 

 could have written this book, but we are of opinion that 

 there are very few chemists adequate to such a task, which 

 has manifestly required a considerable share of practical 

 skill, much deep and theoretical knowledge, and no small 

 degree of patience and perseverance, more especially shown 

 in the clearness of the details, and the perspicuous manner 

 in which he has managed to describe prolix and difficult 

 processes. The work moreover fills up a chasm in chemical 

 literature, by embodying almost all that is important relating 

 to chemical manipulation scattered through the writings of 

 others ; while the author's extensive experience has enabled 

 him to correct their faults, and to present the student and 

 operator with many new and important facts and processes, 

 by which the researches of the laboratory are most essen- 

 tially facilitated. 



Such is our general opinion of the treatise before us, and 

 we are persuaded that those who are capable of appreciating 

 its merits will agree in our decision ; but it is not so easy to 



