I — Eighth Edition (1860)
160 articles
| Article | Vol | Words |
| IAMBLICHUS | 12 | 1,451 |
| IAMBUS | 12 | 609 |
| IAPODES | 12 | 288 |
| IBIS | 12 | 10 |
| IBYCUS | 12 | 214 |
| ICE | 12 | 743 |
| ICEBERGS | 12 | 343 |
| ICELAND | 12 | 8,933 |
| ICELAND MOSS | 12 | 5 |
| ICENI | 12 | 117 |
| ICHNEUMON | 12 | 26 |
| ICHTHYOLOGY | 12 | 162,495 |
| ICONIUM | 12 | 224 |
| ICONOCLASTS | 12 | 406 |
| ICTINUS | 12 | 94 |
| IDA | 12 | 227 |
| IDOLATRY | 12 | 706 |
| IDOMENEUS | 12 | 166 |
| IDRIA | 12 | 160 |
| IDUMEA | 12 | 2,901 |
| IDYLL | 12 | 418 |
| IGLAU | 12 | 37 |
| IGLAWA | 12 | 47 |
| IGLESIAS | 12 | 62 |
| IGNATIUS | 12 | 829 |
| IGNIS FATUUS | 12 | 109 |
| IGUALADA | 12 | 109 |
| ILCHESTER | 12 | 73 |
| ILDEFONSO | 12 | 66 |
| ILERDA | 12 | 30 |
| ILFRACOMBE | 12 | 70 |
| ILISSUS | 12 | 136 |
| ILLE-ET-VILAINE | 12 | 626 |
| ILLINOIS | 12 | 2,341 |
| ILLUMINATI | 12 | 1,644 |
| ILMINSTER | 12 | 86 |
| ILVA | 12 | 39 |
| IMAUM | 12 | 129 |
| IMBROS | 12 | 71 |
| IMERITIA | 12 | 671 |
| IMOLA | 12 | 92 |
| IMPEACHMENT | 12 | 1,639 |
| IMPROVISATORI | 12 | 212 |
| IN CENA DOMINI | 12 | 91 |
| INCENSE | 12 | 342 |
| INCHBALD | 12 | 638 |
| INCHCOLM | 12 | 333 |
| INCHKEITH | 12 | 236 |
| INDENTURE | 12 | 6 |
| INDEPENDENTS | 12 | 6,012 |
| INDERABIA | 12 | 284 |
| INDIA | 12 | 557 |
| INDIA RUBBER | 12 | 38 |
| INDIANA | 12 | 2,884 |
| INDIANAPOLIS | 12 | 138 |
| INDICTMENT | 12 | 91 |
| INDIGO | 12 | 925 |
| INDIVISIBLES | 12 | 47 |
| INDORE | 12 | 677 |
| INDORSMENT | 12 | 49 |
| INDRE | 12 | 604 |
| INDRE-ET-LOIRE | 12 | 604 |
| INDULGENCE | 12 | 888 |
| INDULT | 12 | 1,142 |
| INFALISTATIO | 12 | 115 |
| INFANTRY | 12 | 32 |
| INFORMATION | 12 | 95 |
| INFORMER | 12 | 187 |
| INGENHOUSZ | 12 | 1,335 |
| INGOLSTADT | 12 | 136 |
| INGULPHUS | 12 | 842 |
| INHIBITION | 12 | 879 |
| INJUNCTION | 12 | 321 |
| INK | 12 | 2,130 |
| INKERMANN | 12 | 378 |
| INN | 12 | 559 |
| INNERLEITHEN | 12 | 74 |
| INNOCENT | 12 | 2,019 |
| INQUISITION | 12 | 6,084 |
| INSTINCT | 12 | 1,646 |
| INSTITUTE | 12 | 792 |
| INSURANCE | 12 | 37,093 |
| INTEGRAL | 12 | 55 |
| INTERAMNA | 12 | 310 |
| INTERCALARY | 12 | 31 |
| INTERDICT | 12 | 348 |
| INTERDICTION | 12 | 306 |
| INTEREST | 12 | 12,678 |
| INTERIM | 12 | 197 |
| INTERLACHEN | 12 | 64 |
| INTERLOCUTOR | 12 | 60 |
| INTERMITTENT FEVER | 12 | 689 |
| INTERREG | 12 | 336 |
| INTONATION | 12 | 136 |
| INTUITION | 12 | 17 |
| INVERARY | 12 | 278 |
| INVERBERVIE | 12 | 88 |
| INVERKEITHING | 12 | 177 |
| INVERLOCHY | 12 | 142 |
| INVERNESS | 12 | 716 |
| INVERNESS-SHIRE | 12 | 3,153 |
| INVERTED | 12 | 89 |
| INVERURY | 12 | 137 |
| INVESTITURE | 12 | 92 |
| IODINE | 12 | 6 |
| IONA | 12 | 3,432 |
| IONIA | 12 | 1,316 |
| IONIAN ISLANDS | 12 | 18,316 |
| IONIC SECT | 12 | 352 |
| IOWA | 12 | 2,173 |
| IPHICRATES | 12 | 573 |
| IPSWICH | 12 | 333 |
| IRAK-AJEMI | 12 | 170 |
| IRAK-ARABI | 12 | 36 |
| IRELAND | 12 | 90,532 |
| IRENAEUS | 12 | 1,405 |
| IRETON | 12 | 476 |
| IRIDIUM | 12 | 9 |
| IRIS | 12 | 57 |
| IRKUTSK | 12 | 571 |
| IRON MASK | 12 | 64,928 |
| IRRIGRATION | 12 | 1,055 |
| IRRIGATION | 12 | 15,865 |
| IRVINE | 12 | 218 |
| IRVING | 12 | 1,694 |
| ISAIAH | 12 | 2,317 |
| ISCHIA | 12 | 604 |
| ISCHL | 12 | 733 |
| ISERLOHN | 12 | 72 |
| ISERNIA | 12 | 116 |
| ISH | 12 | 673 |
| ISIDORUS | 12 | 273 |
| ISINGLASS | 12 | 824 |
| ISKARDOH | 12 | 133 |
| ISLAY | 12 | 304 |
| ISLE | 12 | 45 |
| ISLE OF PINES | 12 | 43 |
| ISMAIL | 12 | 143 |
| ISMID | 12 | 136 |
| ISOCRATES | 12 | 1,476 |
| ISOMERISM | 12 | 65 |
| ISOMORPHISM | 12 | 998 |
| ISRAEL | 12 | 66 |
| ISRAELI | 12 | 1,418 |
| ISSOIRE | 12 | 73 |
| ISSOUDUN | 12 | 192 |
| ISSUS | 12 | 191 |
| ISTALIF | 12 | 83 |
| ISTHMIA | 12 | 483 |
| ITALY | 12 | 38,677 |
| ITCH | 12 | 339 |
| ITHACA | 12 | 98 |
| ITIUS PORTUS | 12 | 190 |
| ITURUP | 12 | 70 |
| ITZEHOE | 12 | 45 |
| IVES | 12 | 291 |
| IVIZA | 12 | 199 |
| IVORY | 12 | 2,323 |
| IVREA | 12 | 27,610 |
| IXIGO DE RECALDE LOTOLA | 12 | 2,042 |