CONCLUDING REMARKS. 259 



and dealers. Fertilizers are equal in importance 

 to any of those commercial articles mentioned, 

 while there are greater facilities for fraud. In 

 England and other European countries, the 

 prices of these fertilizers are fixed by the 

 amount and value of the fertilizing elements 

 contained in them, according to the manner in- 

 dicated in this book ; and in this matter, we are 

 far behind those countries we are accustomed to 

 style slow. In those countries, concentrated fer- 

 tilizers are inspected by government officials. As 

 the result of the rigid inspection laws of Ger- 

 many, purchasers are protected. We quote from 

 the circular of George Charles Zimmer, at Man- 

 heim, one of the largest manufacturers of fer- 

 tilizers in Germany, and give three analyses of 

 the superphosphates manufactured by him, to 

 show the operation of the law : 



These fertilizers are always sold and delivered of an ap- 

 proved, uniform, superior quality, and their ingredients war- 

 ranted ; samples of the same are deposited with the Central 

 Agricultural Department of the Grand Duchy of Baden, at 

 Carlsruhe, under whose control the products of the factory are 

 placed by law. The monthly official analyses of supplies on 

 hand in the manufactory, are published from time to time in 

 the Weekly Journal of the Agricultural Society of the Grand 

 Duchy of Baden, and every purchaser of at least half a ton at 

 one time of one of these superphosphates, has the privilege to 

 transmit (free of charge) with enclosure of the original invoice, 

 a sample of the same to Doctor J. Nessler, the President of the 

 Experimental Station, at Carlsruhe, in order to be analyzed, 

 free of expense, to the purchaser. Furthermore, these fertilizers 

 are subject to the control of the Agricultural Societies of Hes- 





