2. When you are fishing up-stream, you may lose the advantage of raising so many fish; but, on the other hand, you will have a better chance of hooking those which rise at your fly, because the darting forward of a fish seizing it has a tendency to tighten your line, and produce the desired effect.
3. If you are in the habit of sometimes catching a fish, there is another great advantage in fishing up-stream, viz. whilst you are playing and leading (necessarily down-stream) the fish which you have hooked, you do not alarm the others which are above you, waiting till their turn comes.
XVIII.
The learned are much divided in opinion as to the propriety of whipping with two flies or with one. I am humbly of opinion that your chance of hooking fish is much increased by your using two flies; but I think that, by using only one, you increase your chance of landing the fish.
XIX.
When you are using two flies, you can easily find the bob-fly on the top of the water, and thus be sure that the end-fly is not far off. When you are using only one fly, you cannot so easily see where the fly is; but I think that you can make a better guess as to where the fish is likely to be after you have hooked him.
"You will find it difficult, with all your attractions, to overcome the strong attachment," &c.
To face page 12.
XX.