CALCAREOUS MANURES— APPENDIX. 3 | j 



light as is consistent with strength, for the greater facility of moving it; 

 and for strength alone, (as in all otiier machines,) the large size of timbers 

 is of less importance than tlieir being well put together. Two thick and nar- 

 row planks, firmly spiked together, and with a space left between of proper 

 size for the sheeve to play in at the upper end, would be a cheaper substi- 

 tute for the jib a. When carts are removing the marl at the same time it 

 is raised, there would be much advantage gained in having the boxes of 

 such size as to be emptied into the carts, and the measure or load of both 

 being made the same. 



