We have been much interested in the inspection of some English knitting machines, now on exhibition at Room 13, Harlem Depot, in this city. The principal of these is what is known as the Nottingham Machine, invented by the Nottingham Manufacturing Co., Nottingham, England. This company is rep-res-nted by Mr. John Kent, 3.34 Broadway, Wew York, who is pleased to exhibit and explain the operation of the machines to all who feel interested in their examination. This gentleman has alsu applications for patents in important improvements in knitting machines now pending through the Sciendfic American Patent Agency. The machines exhibited produce full-fashioned stockings, drawers, shirts, etc. The stocking frame is arranged to make eight legs at once with clear welts and narrowed down to the heel. Mr. Kent inform us that a 21-gage frame will make thirty dozen legs per week ; or with two frames for legs, and one frame for footing, employing the labor of one man and two girls, from sixty to seventy dozen of finished stockings can be made per week, which is a more rapid production than any machine with which we are acquainted with is capable of performing The frames for drawers and shirts are arranged with four sections for knitting four sides of drawers, or four complete shirt sleeves, full-fashioned. When making drawers the frame widens the leg to the gusset, and then narrows up the back. In the widening proc ss one needle has to be cleared of its loops which leaves an eyelet hole in the texture. This is filled up by a very simple device which operates while the widening course is forming, thus perfecting the fabric on the frame, and obviating hand labor for this ? urpose. Wo believe no other frame is capable of doing this on widened fashioned knitted goods. A comparison of the goods with those of ordinary American make shows a great superiority in their finish. There is great want of uniformity in American goods of this class. In purchasing by number a good fit is very uncertain, large bodies with short sleeves, and sleeves of different lengths on the same body, bands of different sizes, and similar defects, often perplex the wearer of these articles. Goods m de on these machines are free from all the above defects, the widening and narrowing being uniformly done as required. The machines are in successful operation in the manufactories of the proprietors, and J. R. Mor ey Co., also of Nottingham. Other English manufacturers have been refused licenses. The Dudley Hosiery Company purchased, two years since, the right of this machine for the United States, and recent impoitant improvements have been transferred to them. Other American firms desiring to compete with English goods of this class are either employing these machines or negotiating for them. We were also shown a small machine for making rib tops with perfect selvedges, stiff welts—slack course, and splicing thread put in. This machine produces a first-class rib top ior half hose, cuffs for shirts, bands for drawers' bottoms, etc. It can be adapted to make 2x1 rib stockings with fancy stripes. It works forty courses per minute. This machine has been ordered by a large number of leading manufacturers; and we trust it will work a reform in the character of the rib tops now put on American shi.ts, drawers, and half-hose. If our hosiery knitting manufacturers expect ever to compete in quality with English goods, they must pay greater attention to finishing details. We are now taking out a patent for Mr. Kent on an improvement in circular knitting machines, which produces an imitation seam in circular knitted goods for half-hose stockings, shirt-bodies, etc. It makes a very handsome seam indeed, much more regular than can be done by hand-work. Ribs may also be run on and cleared, when required for half-liose legs. To change the frame so as to adapt it to making the plain circular web, or the imitation seam, is the work of only a few moments. These improvements would probably have never been introduced into this country but lor the protective policy now adopted by our Government. This is adaitional proof of the wisdom of that policy, which not only sustains such industries as we now have, but draws into the country valuable improvements and even new industries. The Gadd and Moore's patent loom is also shown in connection with the knitting machines. This is probably as cheap a power loom as was ever built. It is a one-shaft loom of the most simple construction, working equally well with the over-pick and imder-pick. and with very little consumption of power. As a calico loom, for which work it is specially designed, its merits must be admitted in this country as they have been in England. The motions are all positive except the shuttle motion. Mr. Kent stated to us that he would be happy to see and give information to those not directly interested in the manufacture of such goods in this country, but who feel in any way desirous to promote the advance of American industry. Carbon Pointed Tool for Kressng Emery Wheels, etc In a recent visit to the office of Mr. John Dickinson, No. 04 Nassau street, New York, we were shown the operation of his new patent Shaped Carbon Tool for turning and dressing emery wheels, grindstones, etc., which is extremely effective. This is the only tool for this purpose in which the application of shaped carbon is made. The points of these tools have five dis'inct cutting edges, which may be substituted one for another, according to the kind of edge required for Epecial kinds of work, the time required to make the change not being more than five minutes. People not accustomed to this kind of tool are often disappointed when they first get one, in regard to the edges. They should bear in mind that the action of the carbon points is that of grinding rather than cutting; a sharp edge like that on a steel tool is therefore not desirable, although to do good work the general form must approximate to that of steel points employed for similar purposes. i'Iie Itaid Against Vaccination. A long article recently appeared in the New York Times, taking the strongest ground against vaccination, urging that it propagated disease, while as a prvention of mortality from small-pox, it was utterly to. fficient. This article represented views now entertained by many upon this subject. The London Lancet ir. an article in favor of vaccination, maks the following remarks : "The fact is, that the only people injured by the Compulsory Vaccination Act are medical men. And they are seriously injured by it, as we can easily show. There is no disease which pays medical men better than small-pox. A good attack of it, makes a man, or child either, a patient for a solid 331 month. Thsn the chances are that the patient is left very weak, and with a very eruptive tendency impressed upon him for another month at least. Styes, or abscesses, or eruptions are frequent results of small-pox. It puts vaccination in the shade for after consequences, which inconvenience the patient but greatly swell his medical bill. We saw a boy lately with an ulcer of the arm several inches long, which had been left by small-pox five years ago. Cullen well said, ' Though the small-pox be not immediately fatal, the more violent kinds are o.ten followed by a morbid state of the body of various kind and event.' It will, then, be readily understood that when the law compels vaccination, it does a great injury to medical men, and aims a most serious blow at a disease which has occasioned many a good doctor's bill. Of course'Mr. Gibbs, the itinerant lecturer against vaccination, says, and will continue to say—for it is impossible for him not to talk nonsense— that the present law is upheld by the medical press in the interest of the profession. We do not write with such a Utopian object as that of convincing Mr. Gibbs. But the above simple statement will satisfy common and candid people that the Compulsory Vaccination Act involves a dead loss to the medical profession ; and that if medical men and journals advocate vaccination, and even the compulsory enforcement of it, it is in direct opposition to their own interests. We are quite prepared for the abolition of the Vaccination Act. Medical men can and do, by vaccination, or rather by revaccination, protect themselves from small-pox, so that they go in and out among patients afflicted with this loathsome disease with perfect security. We have everything to gain pecuniarily by a return to the small pox regime of our forefathers, or the milder form of it which obtained before the present act was passed, and applied with such creditable firmness by the magistrates. Meantime, we shall continue our disinterested support of an act, which indeed is one of the wisest an I most humane which ever adorned our statute book.”