But again, we must not stop short when we have determined what a form means, or what is the original of a device. We have to discover why it was so. The reasons for a motive, the meaning of its present form, have also to be sought. So we come to higher and finer analysis, and at last find ourselves studying psychology.
With so much to learn, it is evident that we must be sure of our premises, and hence the necessity for going to the original sources. But there is always considerable difficulty in getting at the truth, and a statement made by a native must never be accepted as evidence until it has been independently confirmed from other sources. Nothing is easier than to get unreliable information. This is not the place to enter into the various possible sources of error, but I would like to warn those who have the opportunity of getting information first hand, that it is impossible to take too much care, and all suggestive interrogation or leading questions should be totally avoided.
When we are dealing with written evidence the method is one of historical procedure. The means of information of the writer, his credibility, and other factors have to be taken into account; often, too, there is a sparsity, or even an absence of corroborative evidence, which tends to make the testimony uncertain.
Failing these direct methods of obtaining information, there remains the deductive and comparative method. The best example of this mentioned in the preceding pages is Count Goblet d’Alviella’s investigation of the fylfot; indeed his book is a model for method. In another field Dr. Stolpe’s study of the decorative art of the Hervey Islands is a memorable and instructive piece of work.
With the examples of method which are here brought together the student should be in a position to prosecute researches in the innumerable fields which lay open to him.
I would, however, like to take this opportunity to say a word or two to those who wish to commence a study of decorative art from the biological standpoint.
No amount of trouble must be grudged in collecting the data, whether it be in the form of photographs, sketches, tracings, or rubbings; right conclusions largely depend upon a wealth of suitable material.
Rubbings of carved ornament can be made with great facility on tough, thin Japanese paper by means of heel-ball (Ullathorne’s is the best, and it can be obtained from almost any working shoemaker; the paper is more difficult to obtain). The paper is firmly held on to the object, and then rubbed hard with the heel-ball; it is best to always rub the latter in one direction. Whenever possible it is desirable to make a rubbing of the whole of an object, but if only a portion is decorated the outline of the remaining portions need alone be rubbed. Next to photographs, rubbings are the most satisfactory method of obtaining copies of carved objects, as every detail and vagary is accurately reproduced, and they lend themselves very readily to reproduction in the form of “process-blocks,” but it will be found that details will often have to be supplemented by sketches. There are, of course, many carved objects of which it is impossible to make rubbings. A very little experience will soon teach the beginner as to the best methods of procedure in any special case.
Professor A. Grünwedel[211] calls attention to the necessity there is for absolute accuracy when copying the ornamentation of savages. “Still more dangerous [than mistaken interpretation] is the attempted ‘correct’ reproduction of aboriginal ornament according to the European, so-called, feeling for beauty, whereby somewhat crooked lines are replaced by straight ones, and unequal halves, which are deemed corresponding, are made alike. This method causes fundamental error, since through its corrections, it renders impossible a critical examination of the visual ability of wild races. The Orang-hûtan draws a curve and sees it as a straight line, he makes too many legs, too few fingers, but has, in spite of these faults, according to our conceptions, the power of seizing abbreviations of parts of the body in a picturesque manner, of skilfully interpreting contours and of preparing intelligent ground-plans. The diagrammatic copying of primitive ornamental forms can therefore have no scientific value.”
Two most important points to note are the locality whence an object comes, and the date of its manufacture and collection.