[I submit a few facts and impressions concerning the arrangements made for mental defectives in Vienna and Berlin that a short visit enabled me to obtain.

Abstract Low-pressure die cast (LPDC) is widely used in high performance, precision aluminum alloy automobile wheel castings, where defects such as porosity voids are not permitted. The quality of LPDC parts highly influenced by the casting process conditions. A need exists to optimize variables improve part against difficult gas and shrinkage porosity. To do this, variable measurements be stud...

The PC pathway conveys both chromatic and achromatic information, with PC neurons being more responsive to chromatic (L-M) than to achromatic (L+M) stimuli. In considering the evolution of color vision, it has been suggested that the dynamic range of chromatic PC-pathway processing is tuned to the chromatic content of the natural environment. Anomalous trichromats, with reduced separation of th...

1. THAT there should not at present be any revision or re-issue of the pamphlet on Sterilisation (now out of print) issued by the Association in 1923, and containing the conclusions arrived at by the Medical Committee, the Medical Committee in general being in agreement with the views expressed in the pamphlet dealing with the same subject, written by Dr. Tredgold and published by the Associati...

There is no need, in writing for this journal, to emphasise the service which the *Binet-Simon Scale for the Measurement of Intelligence and its many revisions have rendered in the study of mental deficiency. The substitution of objective measurement in diagnosis for mere personal opinion ; the possibility of estimating degrees of defect and of stating them in standardised language; the realisa...

Some months ago, the N.A.M.H. sent a questionnaire on this subject to medical superintendents of Mental Deficiency Institutions in the United States. Amongst the replies received was one of special interest from Dr. Neil Dayton, who is Superintendent of the Mansfield State Training School, Connecticut, and a prominent member of the American Association on Mental Deficiency. His views and those ...