One important kind of symbolism had to do with the _form_ of the object deified. Thus, it appears that certain objects,--particularly upright objects,--stones, mounds, poles, trees, etc., were erected, or used as found in nature, as typifying the male generative organ. Likewise certain round or oval objects, discs, certain fruits and certain natural caves, were worshipped as representing the female generative organ. (The yoni of India.) We also find that certain _qualities of animal or vegetable_ nature were equally venerated, not because of their form, but because they stood for some quality desirable in the generation of mankind. Thus we find that some animals--the bull because of its strength and aggressive nature, the snake, perhaps because of its form or of its tenacity of life,--were male representatives of phallic significance. Likewise the fish, the dolphin, and a number of other aquatic creatures came to be female representatives. This may be shown over and over again by reference to the antique emblems, coins, and engravings of many nations. Another later symbolism, which was adopted by certain philosophies, was more obscure but was none the less of distinct sexual significance. _Fire_ is made to represent the male principle, and _water_, and much connected with it, the female. Thus we have Venus, born of the Sea, and accompanied by numerous fish representations. Fire worship was secondary to the universally found sun worship. The sun is everywhere the male principle, standing for the generative power in nature. At one time the symbolism is broad, and refers to generative nature in general. At another time it refers solely to the human generative organs. Thus, the Greek God Hermes, the God of Fecundity in nature, is at times represented in unmistakable priapic attitudes. Still another symbolism was often used in India. This was the addition of a number of members to the deity, possibly a number of arms or heads. This was in order to express a number of qualities. Thus the deity was both generator and destroyer, one face showing benevolence and kindness, the other violence and rage. In many of the deities both male and female principles were represented in one,--an Androgyne deity--which was an ideal frequently attempted. The idea that these grotesque deities were merely the expression of eccentricity or caprice on the part of their originator is not to be entertained. Richard Payne Knight has pointed out that they occur almost entirely on national coins and emblems, and so were the expression of an established belief. We shall refer first to the simpler symbols, those in which an object was deified because of its form.