Notices respecting New Books. 4i7 



Abstract of Analyses of Sewage &c. 

 Tottenham Experiments. 



Average Average water Tottenham 

 sewage. from sewage. water. 



Total solid matter per \ 203<89 81 . Q6 48 . 70 



gallon . . . J 



Organic matter . . 109*20 14*62 11-31 



Ammonia .... 3*970 *584 



Phosphoric acid . . 7*23 



Common salt . . . 57*10 57*51 9*21 



Silica, alumina, and! 3() .g 6 g . 82 28>18 



various salts . . J 



Sewage Residue or Manure. 



Water 4-45 



Organic matter containing ammonia 2*37. 20*05 



Phosphoric acid 5*33 



Sulphate of lime 1*67 



Silica, alumina, &c. ....... 68*50 



100*00 



XI. Notices respecting New Books. 



A Dictionary of Chemistry and the Allied Sciences. By Henry 

 Watts, B. A. ,F.R.S. 5vols.8vo. London: Longmans (1863-68). 



HP-HE special literary form in which a science shall find appropriate 

 -*- expression is not by any means a matter of indifference. A body 

 of truth which is replete with laws, the meet reward of meritorious 

 centuries, may indeed, like a wealthy individual pf high birth and 

 long descent, assume the most varied exterior without discredit ; but 

 should it be scarcely yet provided with definitions, it has, like some 

 struggler of recent lineage and narrow means, merely a single guise, 

 which it would be impossible to improve without an awkward be- 

 trayal of the peculiar manners and partial education of the wearer. 

 This single guise is known to literature as the dictionary ; and in 

 it are most fitly adduced, as belonging to a primitive epoch, the facts 

 and circumstances on which the inductive method is to proceed. In 

 the course of time, as hypothesis and verification mingle with their 

 predecessors and result in law, it becomes allowable to discard in form 

 many of the original details (whose accurate ascertainment had been 

 nevertheless important), and to state deductively the substance of 

 much that has been achieved. When such a period has been fairly 

 reached, the manual is its legitimate exponent. Eventually, as col- 

 lateral branches spring from the parent stock, a science divides itself 

 into large (but peculiar) subjects of inquiry, and in each case the 

 treatise exhibits the final results or total issue of such a proceeding. 

 These being, as far as we have been able to gather, the functions 



