When a dog is shy of anything and will not come near it, you should teach him that there is nothing to be afraid of, either with the help of a courageous dog—which is the surest way— or else by touching the object that looks alarming yourself, and gently leading your dog up to it.
To force him with corrections only increases his terror; for when dogs feel pain in such a predicament; they think that this too is caused by the thing at which they shy.