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CLOSE-UP OF SPERMATOZOA
137 been made in the campaign against venereal disease. The benefit to the coming generations would itself justify the Minister of Health in testing medical opinion on the point.
from the restrictions, and other people who are accustomed to drink a lot of milk will automaticallv have a of large ration, since this is calculated as the previous consumption. The number of cases which cannot be met by a little readjustment within the houseJL hold is therefore likely to be small.
six-sevenths
CLOSE-UP OF SPERMATOZOA THE electron microscope, which gives effective magnifications of 50,000 or more diameters, and has already Colonel (temporary Brigadier) ALEXANDER HOOD told us much about bacterial appearances under electron E Lieut.-General Sir William MacArthur as bombardment, has lately been turned on the sperma- succeeds (director-general of the Army Medical Services on Aug. 1. tozoon in the hope of resolving some of the outstanding ] Hood graduated from the University of doubts about its structure. In this apparatus magnetic-Brigadier 1 in 1910 and received a commission in the field " lenses " replace the glass ones of compound Edinburgh J R.A.M.C. two and differentiation on in differences years later. microscopes depends within the rather than on variation in density specimen refractive indices or colour. The conditions for examinSYSTOLIC MURMURS ing specimens by electron microscopy are important because the vacuum, the drying of the specimen or even IN his Honyman-Gillespie lecture in Edinburgh last the electron bombardment itself may cause artefacts 1week Prof. D. M. Lyon said that up to the end of last which can masquerade as normal structure. It seems,
must
’
from the restrictions, and other people who are accustomed to drink a lot of milk will automaticallv have a of large ration, since this is calculated as the previous consumption. The number of cases which cannot be met by a little readjustment within the houseJL hold is therefore likely to be small.
six-sevenths
CLOSE-UP OF SPERMATOZOA THE electron microscope, which gives effective magnifications of 50,000 or more diameters, and has already Colonel (temporary Brigadier) ALEXANDER HOOD told us much about bacterial appearances under electron E Lieut.-General Sir William MacArthur as bombardment, has lately been turned on the sperma- succeeds (director-general of the Army Medical Services on Aug. 1. tozoon in the hope of resolving some of the outstanding ] Hood graduated from the University of doubts about its structure. In this apparatus magnetic-Brigadier 1 in 1910 and received a commission in the field " lenses " replace the glass ones of compound Edinburgh J R.A.M.C. two and differentiation on in differences years later. microscopes depends within the rather than on variation in density specimen refractive indices or colour. The conditions for examinSYSTOLIC MURMURS ing specimens by electron microscopy are important because the vacuum, the drying of the specimen or even IN his Honyman-Gillespie lecture in Edinburgh last the electron bombardment itself may cause artefacts 1week Prof. D. M. Lyon said that up to the end of last which can masquerade as normal structure. It seems,
must
’