INCREASED intracranial pressure in the absence of a space-occupying lesion or internal hydrocephalus was first described by Quincke (1893). The condition has since been variously described as serous meningitis (Quincke, 1897; Warrington, 1914; Sheldon, 1933), otitic hydrocephalus (Symonds, 1931), meningeal hydrops (Passot, 1913; Davidoff and Dyke, 1937), pseudotumour (Warrington, 1914), toxic h...

INCREASED intracranial pressure in the absence of a space-occupying lesion or internal hydrocephalus was first described by Quincke (1893). The condition has since been variously described as serous meningitis (Quincke, 1897; Warrington, 1914; Sheldon, 1933), otitic hydrocephalus (Symonds, 1931), meningeal hydrops (Passot, 1913; Davidoff and Dyke, 1937), pseudotumour (Warrington, 1914), toxic h...

The first case of agenesis of the corpus callosum was reported by Reil in 1812. Eighty-two cases, in which the condition was encountered incidentally at necropsy, were collected from the literature up to 1933 by Baker and Graves. Despite the introduction of pneumo-encephalography by Dandy in 1918 it was not until 1934 that Davidoff and Dyke established its value in the diagnosis of agenesis of ...

COMPLETE or partial agenesis of the corpus callosum is uncommon especially in adults; the incidence amongst patients in institutions where numerous air encephalograms are performed is 3% (Carpenter and Drukemiller, 1953). Reil (1812) published the first report of a case, describing the necropsy findings in a 30 year old woman of low mentality; further cases discovered at necropsy were subsequen...

COMPLETE or partial agenesis of the corpus callosum is uncommon especially in adults; the incidence amongst patients in institutions where numerous air encephalograms are performed is 3% (Carpenter and Drukemiller, 1953). Reil (1812) published the first report of a case, describing the necropsy findings in a 30 year old woman of low mentality; further cases discovered at necropsy were subsequen...

J. LAWRENCE POOL, The Neurological Institute of New York 1909-1974, with personal anecdotes, Lakeville, Conn., Pocket Knife Press for the author, 1975, 8vo, pp. xii, 154, illus., $5.00 (Copies available from the author, Box 31, West Cornwall, Conn. 06796, U.S.A.) The Institute, the first of its kind in America, is now one of the most outstanding centres in the world for the treatment of, and re...

Post-mineralization activities may cause difficulties in the process of ore modeling in porphyry deposits. Sungun, NW Iran, is one of the porphyry copper deposits, in which dyke intrusions have made ore modeling more complicated than expected. Among different kinds of dykes, two types were chosen and the consequent geostatistical analyses were applied on. In this study, simple directional vario...

J. LAWRENCE POOL, The Neurological Institute of New York 1909-1974, with personal anecdotes, Lakeville, Conn., Pocket Knife Press for the author, 1975, 8vo, pp. xii, 154, illus., $5.00 (Copies available from the author, Box 31, West Cornwall, Conn. 06796, U.S.A.) The Institute, the first of its kind in America, is now one of the most outstanding centres in the world for the treatment of, and re...

A flinty, spherulitic dyke of peralkaiine trachyte in a Precambrian dyke-swarm consists mainly of albite and aegirine. Within this, euhedral crystals of narsarsukite, NadTi,Fe)Si401o(F), occur as short prisms elongate parallel to c. This distinguishes them from all previously described narsarsukites, which have tabular habits. Minor phases present include micas, apatite, quartz, pectolite, nord...

S U M M A R Y In the early stages of continental rifting, extension takes place by normal faulting, while in mature continental rifts dyke intrusion dominates. Little is known about the nature of the transition between fault-controlled and dyke-controlled extension or about the processes in an intermediate setting. Here, we present observations of the temporal and spatial evolution of surface d...