| Nicotine-sulphate76 | ||
| Northern Spy47 | ||
| Novius cardinalis32 | ||
| Cabbage aphis45 | ||
| Cabbage green-fly45 | ||
| Cabbage-tree56 | ||
| Cabbage-tree moth56 | Oak-scale37 | |
| Cabbage-tree scales38 | ||
| Cabbage white butterfly55 | Oeceticus omnivorus56 | |
| Calcium cyanide76 | ||
| Caliora limacina59 | Oleander-scale40 | |
| Olearia forsteri60 | ||
| Camellia scale37 | Olearia gall-midge60 | |
| Carbon-bisulphide76 | ||
| Caterpillars51 | Onion66 | |
| Caterpillars in lawns65 | ||
| Orange-scale40 | ||
| Potato sickness72 | ||
| Cuticle17 | Potato tuber-moth62 | |
| Cut-worms52 | Predaceous wasps78 | |
| Cydia pomonella61 | Privet38 | |
| Daffodil72 | Pulvinaria camelicola37 | |
| Development of insects22 | Pupa25 | |
| Diamond-backed moth52 | Puparium25 | |
| Digestive system of insects21 | Pyronota festiva58 | |
| Dusts75 | ||
| Earthworms15 | Radish55 | |
| Easter lily68 | ||
| Eggs of insects22 | Red currant44 | |
| Elder35 | Red oil76 | |
| Eleagnus37 | Red orange-scale40 | |
|
