157. From what has been written of photographic manipulation thus far, it would seem to be all clear sailing. But it is not. Troubles innumerable occur continually - daily - which baffle all our experience, and which would send us far out at sea oftentimes, were there not sundry - not always certain - indications to prevent too much drifting, to hail us and to guide us on the journey. It should be the rule with every careful manipulator to act as soon as the least danger-signal makes its appearance. Make no delay in tracing whatever trouble or defect comes to its wry source, and annihilate it, if you can, immediately. Stop the leak, disperse the fog, turn from the storm impending as soon as the " indications " warn you. Thus much trouble and loss will be avoided. Carelessness, uncleanliness, lack of attention to what you know, and lack of desire to do well, are the great causes of annoyance.

158. The troublous effects, or defects, will now be treated fully. One of the most common, and therefore the oftenest met, is known as veil or

167. I have travelled a great deal, and have found the trouble solely this: that the photographers who do not have success in working have no rule or system to work by; and if so, they neglect it and are careless. Now, my rule is as follows: Use your chemicals as you do yourself. In cold weather strengthen them, and keep them in a temperate state. Test everything; never guess, as it is commonly called. Be sure you are right, then go ahead, and success is certain. - Carl Von MoelkE.

Then, when once you are in a decently clean shape, for the love of humanity, the respect you ought to have for the profession you have chosen (from whatever motives), do not let a lot of old trash or dirt accumulate. If we ever expect to be anything but poor photographers (in every sense of the word), if we ever expect to bring our profession up "to the mark of its high calling," if we ever expect the " dear public " to respect us, and ever speak of us in any other way than as " only a photographer," we must come to that point where we can at least respect ourselves. - H. R. Farr.