18. Less ripe than 14 and 15; fairly even; ribs seem heavy. 19. Green, deep; not so erect as 18; ranker in growth than most plats.

20. Very dark green; pointy leaves; slow in growth; a patch of low ground shows yellowing of plants.

Harvesting. The relative conditions of advanced maturity changed somewhat during the short interval before harvesting. The plats were harvested in the order of their ripening, as follows:

On August 6, Plats 4, 5 and 16.

On August 7, Plats 17, 18 and 19.
On August 10, Plats 15, 6 and 7.
On August 11, Plats 8, 11 and 12.

On August 17, Plats 1, 2 and 20.

On August 18, Plats, 1, 2, 3, 6, 7, 8, 11, 12, 17, 18, 19.
On August 19, Plats 9, 10, 13 and 14.

These several observations indicate that the plats receiving stable manure were slow and uneven in ripening and gave smaller plants. The absence of soluble phosphates in the mixed fertilizers seems also to have caused a slow maturing and inferiority in size and quality. Again, the excellence of the leaf yielded by double carbonate of potash and magnesia as a substitute for sulphate of potash is shown. The influence of soluble nitrogenous compounds, such as nitrate of soda and sulphate of ammonia, used instead of part of the cotton-seed meal, is manifestly toward retarding maturity in tobacco as in other vegetation. Again, the slow growth of the plants on Plats 12 and 20 shows basic slag to be inferior to acidulated phosphate as a source of phosphoric acid for tobacco.

Curing. The harvested crop was cured on the stalks, hung on Iaths in an ordinary tobacco shed. The process was carried to completion without injury to the leaf; the conditions maintained during the curing were carefully observed and will be elsewhere presented in connection with the report of certain curing experiments made at the same time.

The cured leaf was weighed, stripped and sorted, and the number of plants on each plat counted. The yields obtained from the several treatments are shown in the following table: