APPENDIX. 



343 



In the last edition of his book on Manure, " Praktische Dungerlehre," 

 Dr. Emil Wollf, gives the following tables : 



Of 100 Ibs. of dry substance in the food, there is found in the excre- 

 ments : 



Of 100 Ibs. of organic substance in the food, there is found in the ex- 

 crements : 



Of 100 Ibs. of nitrogen in the food, there is found in the excrements : 



Of 100 Ibs. mineral matter in the food, there is found in the excrements : 



The excess of mineral matter is due to the mineral matter in the 

 water drank by the animals. 



The following tables of analyses are copied in full from the 

 last edition (1875), of Dr. Emil Wolff's Praktisclie Dungerlehre. 



The figures differ materially in many cases from those previously 

 published. They represent the average results of numerous relia- 

 ble analyses, and are sufficiently accurate for all practical purposes 

 connected with the subject of manures. In special cases, it will be 

 well to consult actual analyses of the articles to be used. 



