mecum would mean I conjointly=we,
tecum would mean thou conjointly=ye.
Such is the illustration of the possible power of a possible combination. The reasons for thinking it to have a reality in one language at least lie in the following forms:—
1. The Tumali word for with is da.
2. The Tumali words for I, thou, and he respectively are ngi, ngo, ngu.
3. The Tumali words for we, ye, they are ngin-de, ngon-da, ngen-da respectively.
4. The Tumali substantives have no such plural. With them it is formed on a totally different principle.
5. The Tumali adjectives have no plural at all.
6. The Tumali numerals (even those which express more than unity and are, therefore, naturally plural) have a plural. When, however, it occurs, it is formed on the same principle as that of the plurals of the substantive.
7. The word da=with is, in Tumali, of a more varied application than any other particle; and that both as a pre-position and a post-position:—daura=soon (da=in, aura=neighbourhood); datom=in (with) front (face); d-ondul=roundabout (ondul=circle); dale=near (le=side), &c.
8. Prepositions, which there is every reason to believe are already compounded with da, allow even a second da, to precede the word which they govern:—daber deling=over the earth (ber=earth).