I came across this and found it interesting in that these passages mirror the Yorkshire/Parti debate in some ways. The first passage has to do with the Paisley/Clydesdale Terrier and the reaction of Skye terrier fanciers to them. It is from "The Terrier. A History And Description Of The Modern Dogs Of Great Britain And Ireland" by Rawdon B. Lee, copyright 1894.
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"Mr. Thomson Gray, in his "Dogs of Scotland," says: "While possessing all the characteristics of the Skye, as far as form, colour, and length of coat are concerned, they have a soft, silky coat, and on this account have been known for the past ten years or so as Glasgow or Paisley terriers. Previous to this, however, they were simply known as Skyes, and exhibited as such. The Paisley terrier has never been very widely distributed, and seldom found beyond the valley of the Clyde. At the shows which used to be held at Glasgow a dozen or more years back, these silky-coated terriers were seen in all their beauty, and the fact of their appearing there as Skyes was what first brought them into prominence. The fanciers of the hard-coated Skyes rose in arms against them, holding that they were not Skyes, as they had a silky coat, and were only pretty 'mongrels' bred from Skye terrier 'rejections,' and ought to be known as Glasgow or Paisley Skyes. On the other hand, the breeders of the silky-coated dogs held, as a matter of course, that the texture of coat their dogs possessed was the correct one. This was untenable, as until the introduction of this breed no Scottish dog had a silky or soft coat.
"After the decision against the eligibility of the silky-coated dog to compete in the Skye terrier classes, the breed rapidly declined. A few, however, held to the breed out of pure love and admiration for it, but they were few. The Paisley fanciers appear never to have lost sight of the dog, and it was not only by keeping and breeding them that they again brought the silky-coated beauties into popularity, but by instituting classes for them at the annual dog shows held at Paisley on New Year's Day. A fresh interest was thus begun in the breed, which has never been allowed to flag. . . . Breeders of hard-coated dogs, more especially if the coat be long, know how difficult it is to keep up the hard coat, on account of the washing, combing, etc, required to keep the dog in show trim, and also from the idle and indoor life exhibition dogs lead. A pup now and again will be found in a litter with a soft coat, although not quite silky in texture. These a good breeder, as a matter of course, would reject; but how many do really reject them, if they are good in other points? They perhaps do not breed from them, but they do not hesitate to sell them, and thus increase the difficulty by giving good pedigrees to such dogs. In Skye terriers the length of coat is one of the principal points; one therefore can easily understand how a pup with an extra long coat would be prized, even should the coat be a little soft. This, then, was how the Paisley terrier originated. The silky-coated dogs, from their great beauty, took the eye, and were greatly prized as pets; and as the demand increased, which it very quickly did when they began to win prizes, they were bred in large numbers, and the points now attained were only arrived at by careful selection and scientific breeding. Some dark rumours are afloat about the crosses that were resorted to to gain the points desired, but if such a thing ever took place it has never been made public. It is hinted that the Dandie had something to do with the manufacture of this breed, and we have heard it asserted that the Paisley terrier was the result of a Dandie-Skye cross, but we have seen no evidence to support this statement. We are of opinion that no cross was required, and that in the case of the best strains none took place."
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Sound kinda familiar? Here's another passage from the same book.
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"There are some other rough-haired toy terriers, which are, however, of little account, because they have never been bred to any particular type. Occasionally wee things very like what a miniature Skye terrier would be are seen; and, again, some smart little dogs with cut ears, evidently a cross between a Yorkshire terrier and some other variety of small dog, are not at all uncommon, and were quite numerous before the dog show era commenced. Since then the general public will not look at anything other than what is considered to be of blue blood. At one of the early London shows separate classes were provided for Scotch terriers under 71b. weight and white in colour, fawns with the same limit, and blues likewise, each of the three attracting a fair entry, most of which were, however, what we should now call "cross-bred" broken-haired toy terriers."
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...and here's the breed standard for the Yorkshire Terrier from the same book.
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"Coat
The hair as long and straight as possible (not wavy), which should be glossy, like silk (not woolly); colour, a bright steel blue, extending from the back of the head to the root of the tail, and on no account intermingled the least with fawn, light, or dark hairs."
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All this doesn't settle any debate, because those that want to argue will. It is a good read, however, for any interested in older accounts of the Yorkshire and the other Terriers. The book is available to read online and here is the link for it.
The Terriers. A History And Description Of The Modern Dogs Of Great Britain And Ireland | by Rawdon B. Lee