-45- of plant abnormalities. Some causes not mentioned previ- ously are salt spray, wind, storms, flying gravel, soil conditions and land crabs. In ascribing the cause of damage to plants in a region where radioactive fallout has occurred, not only the radiation but also the other factors mentioned above must be considered. The recovery of the plants at Belle Island following their almost complete destruction by the Nectar detonation is remarkable. The slow recovery of two of the plants investigated might be attributed to other changes associated with the detonation rather than to the initial or residual radioactivity.