This section is from the book "Complete Self-Instructing Library Of Practical Photography", by J. B. Schriever. Also available from Amazon: Complete Self-Instructing Library Of Practical Photography.
First. You must give full time to the most dense shadows. Try to over-time a trifle - it will do no harm - but to under-time will result in total failure, for if you underexpose, then you would need to open the pores of the film by applying more alkali, or carbonate of soda. As the alkali acts on the entire plate it forces the highlights, and this is what you want to avoid. By this method the highlights are checked by lack of alkali, and the shadows build up equally with the highlights; so remember and time fully.
Third. Use only enough of carbonate of soda to set the pyro and sulphite to action, usually ten drops is sufficient for this.
Fourth. Use double the amount of water usually used in ordinary developing. The water aids in supplying the mellow, round and crisp effect in the negative. Do not hurry the development. This is not a commercial developer; you are after quality, and in order to obtain the very best quality you must use care, and do not expect the image to appear for at least two minutes. If it does not appear by this time, a few drops more of soda should be added. When adding more carbonate of soda, bear in mind that this alkali opens the pores of the film and permits the developing agent, pyro, to act, and as the pyro acts on the parts of the plate exposed the longest - which are the highlights - the more carbonate of soda used the quicker the plate will develop; and if too much is added the highlights are apt to become choked before the shadows have had time to build up and strengthen. Therefore, by using a very small amount of carbonate, and the regular amount of sulphite, which is a neutral soda, you restrain the highlights, and permit the pyro to attack the shadows equally with the highlights, and gradually build them up together. Should the shadows be insufficiently exposed you can not force them, and the result would be a very poor negative; therefore, ample exposure is essential.
A DULL OCTOBER DAY Study No. 8, See Page 344 John Chislett, Indianapolis, Ind..
396. By following the above instructions to the letter you cannot fail to produce the most beautiful results that it is possible to obtain by any known method of manipulating the chemicals.
397. It may require several trials before one will be able to manipulate the developer, and obtain all the quality there is in the plate, but by patience and care, and a little practice, one will soon learn to produce in the negative every effect that is visible on the ground glass, even to the most minute detail. It is not advisable to use this method of developing for all purposes, but only for special work where it is convenient to apply it. For general commercial work we would recommend the Universal Developing.