1. The objects and advantages of bone biopsy in the histological,
haemocytological and biochemical study and diagnosis of nutritional
deficiency diseases are enumerated.
2. The technique for such biopsies is described for the various
domesticated animals, stress being laid on the likely sources of
accidents and methods employed to prevent these.
3. The necessity for simplifying and accelerating methods of
diagnoses of bone conditions when dealing with large numbers of
animals is stressed and the methods evolved towards this end are
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