482 Toicn Sewage. 



tlie solid substance was less in the sewaged grass than in the 

 unsewaged, and diminished as the season advanced, or the 

 weather was ungenial. 



The nitrogenous substance was much greater in the solid 

 matter of the sewaged than of the unsewaged grass, also greater 

 as the season advanced, and after periods of cold and wet. 



The indigestible woody fibre bore about an equal proportion 

 to the solid matter in the sewaged and the unsewaged pro- 

 duce ; this proportion in each case diminished as the season 

 advanced. 



It will be seen presently that when used as food, the fresh 

 unsewaged grass was more productive of both meat and milk 

 than the sewaged, but that a given weight of the solid substance 

 of the sewaged grass was more productive than an equal weight 

 of that unsewaged. 



When the grass was cut green and given alone to fattening 

 oxen tied up under cover, the result was very unsatisfactory ; but 

 when oilcake was given in addition, it did not fall far short of an 

 average result, for oxen so fed under cover on a good mixed 

 diet. 



It should here be mentioned that at Croydon, although the 

 land there was more liberally irrigated than at Rugby, much 

 more satisfactory feeding results have been obtained by fattening 

 stock on the land. The practice there is to irrigate for three or 

 four days and nights together, to repeat the treatment two or three 

 times for each crop, and when the grass has got a sufficient head, 

 to stop the application and turn the stock upon the land, where 

 they remain until the grass is closely eaten down. They are 

 then removed, the land is re-irrigated, and so on. 



At Rugby, when the grass (as much as they chose to eat) 

 was given to milking cows, much better results were obtained. 

 The unsewaged grass was then found to be more productive of 

 milk and increase (but especially of milk) than an equal weight 

 of fresh sewage grass, but for equal amounts of dry solid substance 

 the sewaged grass had the advantage. The milk from the 

 sewaged grass was slightly less rich — contained less casein, 

 butter, sugar, and total solid matter, though more mineral 

 matter ; when oilcake was given with the grass, whether sewaged 

 or unsewaged, the richness of the milk was notably increased. 



The productive quality of the grass was very different in 

 different seasons and at different periods of the same season, 

 being very inferior in the wet and cold season of 1862, and 

 generally towards the close of each season. 



A faithful record of the general results is given in the fol- 

 lowincr Table : — 



