If these descents are followed out it will be found that, in the female line, Kapota is the mother of Mata, and Mata in turn is the mother of Kapota; so Ippata is the mother of Buta, and the latter in turn is the mother of Ippata. It is the same with the male classes; but since descent is in the female line, the Kamilaroi tribes derive themselves from two supposed female ancestors, which laid the foundation for two original gentes. By tracing these descents still further it will be found that the blood of each class passes through all the classes.
Although each individual bears one of the class names above given, it will be understood that each has in addition the single personal name, which is common among savage as well as barbarous tribes. The more closely this organization upon sex is scrutinized, the more remarkable it seems as the work of savages. When once established, and after that transmitted through a few generations, it would hold society with such power as to become difficult of displacement. It would require a similar and higher system, and centuries of time, to accomplish this result; particularly if the range of the conjugal system would thereby be abridged.
The gentile organization supervened naturally upon the classes as a higher organization, by simply enfolding them unchanged. That it was subsequent in point of time, is shown by the relations of the two systems, by the inchoate condition of the gentes, by the impaired condition of the classes through encroachments by the gens, and by the fact that the class is still the unit of organization. These conclusions will be made apparent in the sequel.
From the preceding statements the composition of the gentes will be understood when placed in their relations to the classes. The latter are in pairs of brothers and sisters derived from each other; and the gentes themselves, through the classes, are in pairs, as follows:
| Gentes. | Male. | Female. | Male. | Female. | |||||
| 1. Iguana. | All | are | Murri | and | Mata, | or | Kubbi | and | Kapota. |
| 2. Emu. | ” | ” | Kumbo | ” | Buta, | ” | Ippai | ” | Ippata. |
| 3. Kangaroo. | ” | ” | Murri | ” | Mata, | ” | Kubbi | ” | Kapota. |
| 4. Bandicoot. | ” | ” | Kumbo | ” | Buta, | ” | Ippai | ” | Ippata. |
| 5. Opossum. | ” | ” | Murri | ” | Mata, | ” | Kubbi | ” | Kapota. |
| 6. Blacksnake. | ” | ” | Kumbo | ” | Buta, | ” | Ippai | ” | Ippata. |
The connection of children with a particular gens is proven by the law of marriage. Thus, Iguana-Mata must marry Kumbo; her children are Kubbi and Kapota, and necessarily Iguana in gens, because descent is in the female line. Iguana-Kapota must marry Ippai; her children are Murri and Mata, and also Iguana in gens, for the same reason. In like manner Emu-Buta must marry Murri; her children are Ippai and Ippata, and of the Emu gens. So Emu-Ippata must marry Kubbi; her children are Kumbo and Buta, and also of the Emu gens. In this manner the gens is maintained by keeping in its membership the children of all its female members. The same is true in all respects of each of the remaining gentes. It will be noticed that each gens is made up, theoretically, of the descendants of two supposed female ancestors, and contains four of the eight classes. It seems probable that originally there were but two male, and two female classes, which were set opposite to each other in respect to the right of marriage; and that the four afterward subdivided into eight. The classes as an anterior organization were evidently arranged within the gentes, and not formed by the subdivision of the latter.
Moreover, since the Iguana, Kangaroo and Opossum gentes are found to be counterparts of each other, in the classes they contain, it follows that they are subdivisions of an original gens. Precisely the same is true of Emu, Bandicoot and Blacksnake, in both particulars; thus reducing the six to two original gentes, with the right in each to marry into the other, but not into itself. It is confirmed by the fact that the members of the first three gentes could not originally intermarry; neither could the members of the last three. The reason which prevented intermarriage in the gens, when the three were one, would follow the subdivisions because they were of the same descent although under different gentile names. Exactly the same thing is found among the Seneca-Iroquois, as will hereafter be shown.
Since marriage is restricted to particular classes, when there were but two gentes, one-half of all the females of one were, theoretically, the wives of one-half of all the males of the other. After their subdivision into six the benefit of marrying out of the gens, which was the chief advantage of the institution, was arrested, if not neutralized, by the presence of the classes together with the restrictions mentioned. It resulted in continuous in-and-in marriages beyond the immediate degree of brother and sister. If the gens could have eradicated the classes this evil would, in a great measure, have been removed.[48]
The organization into classes seems to have been directed to the single object of breaking up the intermarriage of brothers and sisters, which affords a probable explanation of the origin of the system. But since it did not look beyond this special abomination it retained a conjugal system nearly as objectionable, as well as cast it in a permanent form.