. A text-book of horseshoeing, for horseshoers and veterinarians . Longitudinal section of the wall magnified. The dark stripes parallel and close togetherare horn-tubes; the lighter surface between the tubes represents the intertubular that the horn-tubes are of various diameters. The space between a and b representsthe small tubes of the outer, darker horn of the principal (middle) layer of the wall; the spacebetween b and c the lighter, inner horn of the wall; c, rf, the horn separating the wall properfrom the horny leaves; d, e, the horny leaves (keraphyllous tissue), on which
. A text-book of horseshoeing, for horseshoers and veterinarians . Longitudinal section of the wall magnified. The dark stripes parallel and close togetherare horn-tubes; the lighter surface between the tubes represents the intertubular that the horn-tubes are of various diameters. The space between a and b representsthe small tubes of the outer, darker horn of the principal (middle) layer of the wall; the spacebetween b and c the lighter, inner horn of the wall; c, rf, the horn separating the wall properfrom the horny leaves; d, e, the horny leaves (keraphyllous tissue), on which can be seen fine,parallel, vertical stripes; in the horn-leaf at /, /, are seen fissures passing obliquely upwardand outward towards the wall. the edges of the sole just in front of the bars, with both ofwhich structures it is intimately united. Its horn is quitesoft and very elastic. The median lacuna or cleft of the 58 HORSESHOEING. Fig. Cross-section of the wall, mag-nified: a, horn-tubes; 6, inter-tubular horn. frog (Fig. 31, /) divides it into two branches (Eig. 31, i),which pass backward and outward into the hornj bulbs (, Jc). In front of the median lacuna the two branchesunite to form the hodi/ of the frog(Eig. 31, ]i), which ends in a point,designated the pointy apex, or summitof the frog. On the upper surface ofthe frog, directly over the median cleftof the lower surface, there is a smallprojection called the frog-stay (Figs. 35,/, 38 and 30, h), which fits into themedian cleft of the plantar , the upper surface of the frogshows many minute openings, similarto but smaller than those of the soleand coronary groove, for the receptionof villi. In unshod hoofs the frog, sole, bars, and bearing-edgeof the wall are on a level; that is, the plantar surface of suchhoofs is perfectly flat. The minute structure of the horn can scarcely be considered in de-tail in an elementary treatise such as this
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherphila, bookyear1913
