| Gibson | JA | 18 | The Mammals of the Island of Bute | 5-20 | |
| Gibson | JA | 18 | Population Studies of Clyde Seabirds | 21-30 | |
| Gibson | JA | 18 | The Reptiles and Amphibians of the Island of Bute | 31-32 | |
| Gibson | JA | 18 | The Reptiles and Amphibians of Sanda, Sheep Island and Glunimore | 33-34 | |
| Gibson | JA | 18 | Clyde Seabird Disasters: A Historical Survey | 35-44 | |
| Gibson | JA | 18 | Additional Mammal Notes from the Island of Arran | 45-47 | |
| Gibson | JA | 18 | The Mammals of Sanda, Sheep Island and Glunimore | 48-50 | |
| Gibson | JA | 18 | Additional Mammal Notes from Ailsa Craig | 51 |
