28 



VOELCKER on the Chemistry of Food. 



generally given to pigs or to horses. Not long ago I submitted 

 both kinds of roots grown on the farm attached to the Royal Agri- 

 cultural College to a minute analysis. The calcareous soil in 

 the neighbourhood of Cirencester, on the whole, is not favourable 

 to the growth of these roots, it being in most instances too stony 

 and too shallow : the roots for this reason remain comparatively 

 small ; and though on some x)f the better soils as much as 30 tons 

 are grown, 18 tons per acre are deemed a good average crop of 

 parsnips or carrots in this part of the country. 



The results of these analyses are contained in the subjoined 

 table: 



According to these detailed results the general composition 

 of fresh and dry parsnips and carrots may be represented as 

 follows : 



A comparison of these numerical results with each other will 

 show : 



1. That there is a general resemblance in the composition of 

 parsnips and carrots. 



