MESSRS EDITORSIn a recent number of the SCIENTIFIC AMERICAN, I noticed a brief article on the above subject, and as you well remarked " it is an important one" As facts are wanted on all such matters, I submit the following : The towing of boats on the Erie canal is done in part by horses that are taken along with the boats, and partly by towing companies who keep their horses at stations about twelve miles apart along the whole length of the canal There are three of these towing companies, and they employ about 1400 horses They have found, after great experience, that the most economical and best feed for their horses is a mixture composed of equal parts, by measure, of corn meal and mill feed (bran or shorts weighing about twenty pounds to the bushel), mixed up wet with cut hay, and they accordingly feed this altogether R W Buffalo, April, 1858 ff