Rhythmic thalamic activity.- Differences in the diameter and conduction velocity of motor and fusimotor fibres in nerves to different muscles in the hind limb of the cat.- Some factors governing sensory convergence in the cat's motor cortex.- Control of the neurones of the supraoptic and paraventricular nuclei.- Mammalian slow and fast skeletal muscle.- Some methods of reducing interference caused by stimulus artifacts.- The actions of amino acids upon mammalian neurones.- An example of sensory integration of the stretch reflex.- Viscerotomes and dermatomes: some comparisons of the inner and outer surfaces of the body.- External action currents at cut nerve end.- Interneurones activated by higher threshold group I muscle afferents.- Electrical impedance of striated muscle and its relation to contraction.- Interpretation of the central excitatory and inhibitory states.- The cholinergic factor in the maintenance of experimental atrial fibrillation.- The origin and significance of antidromic activity in motor nerves.- The peripheral mechanisms of cutaneous sensation.- The origin of cerebellar inhibition on Deiters' and intracerebellar nuclei.- Diffusion from constrictions.- The quantal release of transmitter substances.- Membrane calcium and bioelectric potentials.- Transmitter liberation and mobilization in degenerating central synaptic endings.- Post-activation changes in the salivary glands of the dog.- Cholinergic innervation of the cerebral cortex.- An approach to the study of neuroglia and of extracellular space based on recent work on the nervous system of the leech.- Central connections of the sensory paths from the cat's tongue.- Slow synaptic responses in autonomic ganglia.- Physiological observations in foetal transfusion.- Cholinergy and adrenergy in the neural control of sweat glands.- Effects of barbiturates and lack of oxygen on the monosynaptic reflex pathway of the cat spinal cord.- Monoamines and spinal reflexes.- Water metabolism of desert ruminants.- Some applications of input-output technique.- Intracellular recording from neurones of the reticular formation.- Pharmacological stimulation of the deep regions of the human brain by intraventricular injections.- The neurosecretory cells of the mammalian neurohypophysis.- Proprioceptive and exteroceptive projections to the pericruciate cortex of the cat.- The sodium pump of mammalian nerve cells.- Comparison of tendon and bone repair.- Dendritic synaptic patterns: experiments with a mathematical model.- The effect of drugs on the reflex paths to primary afferent fibres.- The role of segmental reflex mechanisms in the regulation of breathing.- Implications of central projections of C fibers in sensory perception.- Some aspects of cerebellar pharmacology.- Specificity in regeneration of optic and olfactory pathways in teleost fish.- The origin of learning. A hypothesis.