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Helium andargon ions in the energy range 100 to 1400 eV and at doses varying from 1012 to 1015 ions/cm2 were implanted in a 304L stainless steel sample. Following implantation a linear temperature increase of the sample caused the gases to be released. The thermal release rates were studied as a function of ion dose and energy. The maxima observed in the thermal release rates are used to determine activation energies for thermally activated processes occurring in the metal. A rapid increase in the CO release rate coincident with the highest temperature He re-emission maximum indicates that the same mechanism is responsible for the release of both CO and He. It is suggested that the transport mechanisms revealed here are important in controlling void formations in neutron irradiated metals.

The following report describes a patient with bony nodules in the skin and a rare hereditary anomaly of bone. She was presented at a meeting of the North of England Dermatological Society in October, 1960, when none of those attending had seen a similar combination. OSTEOMA CUTIS Osteoma cutis, the presence of true bone in the skin, is rare. This term has previously embraced all bony deposits within the integument, irrespective of the underlying pathology. "Osteoma" implies a benign bony newgrowth (Eller and Eller1 ), and should not be applied to bony metaplasia, as has been done in the past, with much resulting confusion.Primary osteoma cutis may be defined as a true bony newgrowth arising within the skin from bone-forming tissue, showing no tendency to invade or metastasize. The number of such cases is small, and they have been variously reported as osteoma cutis, osteomatosis cutis, osteosis cutis, disseminated

No differences were observed in the patterns of adrenal steroidogenesis in vitroby ducks maintained on fresh water or on a hypertonic salt solution.Determinations in vivoof the biological half-life of corticosterone showed no significant difference between ducks maintained on or loaded with saline and fresh water controls.An increase in the apparent volume of distribution of corticosterone was, however, observed in birds loaded with the salt solution after maintenance on fresh water or salt solution.Estimations were made of the secretory rate of corticosterone in vivo. In the ducks maintained on the salt solution an increased adrenal weight was responsible for the enhanced secretory rate but ducks maintained on fresh water and loaded with saline secreted corticosterone at a higher rate per unit weight of adrenal.The implications of the increased rate of corticosterone secretion are discussed in relation to the known dependence of nasal gland function in marine birds on a functional adrenal gland.