Their numbers have been stated as follows:
| Ministers. | Churches. | Members. | |
| 1860 | 475 | 1,750 | 62,000 |
| 1862 | — | — | 60,000 |
| 1863 | 850 | 1,800 | 60,000 |
| 1864 | — | — | 63,000 |
| 1865 | — | — | 60,000 |
| 1867 | — | 1,800 | 105,000 |
The average annual increase of this denomination during seven years by these statements has been 6,143.
25. The denomination called "Six-Principle Baptists" originated in Rhode Island as early as 1665. They are distinguished from other Baptists by deducing their peculiarities from the first three verses of the sixth chapter of Hebrews.
Their numbers have been estimated as follows:
| Ministers. | Churches. | Members. | |
| 1860 | 16 | 18 | 3,000 |
Recent statements put their numbers about the same, and there probably has been no important increase.
27. The "River Brethren" is an organization in Pennsylvania and other states, so-called to distinguish them from the German Baptists or Brethren above-mentioned.
Their meetings are generally held in dwelling-houses, or barns fitted up with seats; in other respects, they are similar to the German Brethren.