| XIII. | [LETTER XIII.] | [1] |
| XIV. | [LETTER XIV.] | [1] |
| | [NOTES AND CORRESPONDENCE.] | [21] |
| XV. | [LETTER XV.] | [1] |
| | [NOTES AND CORRESPONDENCE.] | [22] |
| XVI. | [LETTER XVI.] | [1] |
| XVII. | [LETTER XVII.] | [1] |
| XVIII. | [LETTER XVIII.] | [1] |
| XIX. | [LETTER XIX.] | [1] |
| | [NOTES AND CORRESPONDENCE.] | [17] |
| XX. | [LETTER XX.] | [1] |
| | [NOTES AND CORRESPONDENCE.] | [21] |
| XXI. | [LETTER XXI.] | [1] |
| | [NOTES AND CORRESPONDENCE.] | [23] |
| XXII. | [LETTER XXII.] | [1] |
| | [NOTES AND CORRESPONDENCE.] | [25] |
| XXIII. | [LETTER XXIII.] | [1] |
| XXIV. | [LETTER XXIV.] | [1] |
| | [NOTES AND CORRESPONDENCE.] | [25] |
| [INDEX TO THE VOLUMES FOR 1871 AND 1872.] | [1] |