_Jackson_ has invented five machines. The details of each, how much each can do, the testimonials regarding them, &c., would fill many pages. All can be seen in the illustrated catalogue he supplies, so I will only offer a few general remarks. All planters know Jackson’s rollers, and they are held in high estimation. His last invention (if I mistake not) is the Rotary Tea Roller, which is on quite a different principle to the others. It consists of an elongated revolving barrel or cylinder, with a polygonal _internal_ surface, and a roller with a fluted _external_ surface, mounted within the said barrel its whole length. These revolve in opposite directions (the roller the quicker) and the leaf is rolled in the annulus between. It is not yet known what the success of this last invention will be. Not so with his Cross-action and Excelsior Rollers. These are first-rate machines, and all who have tried speak well of them. _Kinmond_ invented the first Tea roller (see page 117), many years ago. Many improvements resulted, eventually, in his “Improved Double Action Tea Roller,” which is a very good machine and has given satisfaction to the many who have used it. From all I have heard and seen, however, I doubt if, take it all in all, it is equal to Jackson’s Cross Action Excelsior. Kinmond, some two years ago, invented a “Centrifugal Roller.” It was made in two sizes. The smaller seems to have done well, not so the larger; one of the latter on the Phoolbarry garden (in which I am interested) has proved a failure. But Mr. Kinmond has quite lately materially altered the said Centrifugal machines, and is confident that they _will_ do well. He is now leaving for India with one, and anticipates good results. Tea machinery is still so much in its infancy that the best machines are likely to be improved upon, and perhaps superseded by others, but as things are now, I think, though some do not agree with me, that Jackson has carried off the palm in rollers. The following two letters on rollers appeared in the _Tea Gazette_, and are well worth attention:-- KINMOND’S IMPROVED PATENT DOUBLE ACTION TEA ROLLING MACHINE.