134 AGRICULTURAL EXPERIMENT STATION. [Jan. 



centimetres of 1^ per cent, sulphuric acid, brought upon a 

 linen filter and thoroughly washed with boiling water. It is 

 then washed into the boiling-flask with a 1^ per cent, solu- 

 tion of sodium hydrate, brought quickly to 100° C, and 

 boiled for thirty minutes, when it is filtered through a 

 Gooch crucible, or balanced filter-]:)apers, washed with 

 boiling water, alcohol and ether, dried at 100*^ C. for an hour, 

 and weighed. The organic matter is then burned oflT, and 

 the wei2;ht of the ash deducted for crude cellulose. 



