Man is divided into three classes, viz., the hare man, the bull man, and the horse man, according to the size of his lingam.
Woman also, according to the depth of her yoni, is either a female deer, a mare, or a female elephant.
There are thus three equal unions between persons of corresponding dimensions, and there are six unequal unions, when the dimensions do not correspond, or nine in all, as the following table shows:
+--------------------+--------------------+
| EQUAL. | UNEQUAL. |
+--------------------+--------------------+
| MEN. | WOMEN. | MEN. | WOMEN. |
+--------+-----------+--------|-----------+
| Hare. | Deer. | Hare. | Mare. |
| Bull. | Mare. | Hare. | Elephant. |
| Horse. | Elephant. | Bull. | Deer. |
| | | Bull. | Elephant. |
| | | Horse. | Deer. |
| | | Horse. | Mare. |
+--------+-----------+--------+-----------+
In these unequal unions, when the male exceeds the female in point of size, his union with a woman who is immediately next to him in size is called high union, and is of two kinds; while his union with the woman most remote from him in size is called the highest union, and is of one kind only. On the other hand when the female exceeds the male in point of size, her union with a man immediately next to her in size is called low union, and is of two kinds; while her union with a man most remote from her in size is called the lowest union, and is of one kind only.
In other words, the horse and mare, the bull and deer, form the high union, while the horse and deer form the highest union. On the female side, the elephant and bull, the mare and hare, form low unions, while the elephant and the hare make the lowest unions.
There are then, nine kinds of union according to dimensions. Amongst all these, equal unions are the best, those of a superlative degree, _i.e._, the highest and the lowest, are the worst, and the rest are middling, and with them the high[33] are better than the low.
There are also nine kinds of union according to the force of passion or carnal desire, as follows: