The kyacks or alforjas just mentioned are made either of heavy canvas, or of rawhide shaped square and dried over boxes. After drying, the boxes are removed, leaving the stiff rawhide like small trunks open at the top. I prefer the canvas, for the reason that they can be folded and packed for railroad transportation. If a stiffer receptacle is wanted for miscellaneous loose small articles, you can insert a soap-box inside the canvas. It cannot be denied that the rawhide will stand rougher usage.
Probably the point now of greatest importance is that of saddle-padding. A sore back is the easiest thing in the world to induce,--three hours' chafing will turn the trick,--and once it is done you are in trouble for a month. No precautions or pains are too great to take in assuring your pack-animals against this. On a pinch you will give up cheerfully part of your bedding to the cause. However, two good-quality woolen blankets properly and smoothly folded, a pad made of two ordinary collar-pads sewed parallel by means of canvas strips in such a manner as to lie along both sides of the backbone, a well-fitted saddle, and care in packing will nearly always suffice. I have gone months without having to doctor a single abrasion.
You will furthermore want a pack-cinch and a pack-rope for each horse. The former are of canvas or webbing provided with a ring at one end and a big bolted wooden hook at the other. The latter should be half-inch lines of good quality. Thirty-three feet is enough for packing only; but we usually bought them forty feet long, so they could be used also as picket-ropes. Do not fail to include several extra. They are always fraying out, getting broken, being cut to free a fallen horse, or becoming lost.
Besides the picket-ropes, you will also provide for each horse a pair of strong hobbles. Take them to a harness-maker and have him sew inside each ankle-band a broad strip of soft wash-leather twice the width of the band. This will save much chafing. Some advocate sheepskin with the wool on, but this I have found tends to soak up water or to freeze hard. At least two loud cow-bells with neck-straps are handy to assist you in locating whither the bunch may have strayed during the night. They should be hung on the loose horses most inclined to wander.