ae Oe — 
TURE 
NA 
designed by M. Nogues, of the Marey Institute of 
Paris, by sins of which it is possible to take up to 
_ 300 photographs per second of moving objects. This 
is perhaps the method of analysis of reflex 
movements and muscular adjustments, such as those 
of posture. In presentation such movements can 
be made to occupy ten to fifteen times their normal 
time. Heavy electric leads are carried to this room 
so that brilliant illumination by arc or mercury 
lamps may be employed; while the flat roof is 
admirably adapted to the purpose of cinematography 
in summer. 
_ The X-ray department is equipped with the latest 
type of apparatus for radiography in all its medical 
branches. Facilities are provided for rapid work as 
well as for the study of movement and anatomical 
structure as revesian by the latest X-ray technique 
of the day. The power unit consists of a 10 kw. 
transformer X-ray set, which supplies energy to the 
X-ray tubes either when working from below or 
above the operating tables, or when used for fluoro- 
scopy; and arrangements are made whereby the 
portable trolley control may be connected either at 
; ee near the tables or at a separate wall plug 
adjacent to the fluorescent screening-stand at the 
_ far end of the room. 
_ One of the X-ray operating tables is fitted with 
automatically moving plate carriers beneath the top, 
which itself is hinged so as to render the tube box 
and diaphragm mechanisms readily accessible. The 
other operating table is fitted with a Potter-Bucky 
grid, and is the second table of the kind that has 
come to this country from the United States. As 
well as a large screening apparatus, there is a heavy 
tube stand for general use, and a number of 
minor accessories. Apparatus for the special radio- 
graphy of the head is also provided. 
e high-tension overhead leads are made of nickel- 
plated tubing of sufficient diameter to reduce the 
ormation of corona to a minimum, and a high- 
tension switch actuated by strings serves to connect 
the transformer terminals with the set of leads 
Tequired for each apparatus as desired. The pro- 
tection of all engaged in the work of the department 
has been carefully provided for, and stray radiation 
prevented from entering adjacent rooms by a cover- 
ing of lead six feet high upon the walls. The lead 
Sheet carefully lapped at the joints is hidden beneath 
tout boarding which serves to absorb the soft com- 
ponent of any secondary radiation which may be 
produced from the lead by stray radiation. The 
floor is covered with rubber. An adjoining dark 
Toom and large viewing room, together with a plate 
‘store, completes the department. 
The installation has been carried out by Messrs. 
Watson and Sons (Electro-Medical), Ltd., London, 
who not only did the work of equipping the X-ray 
June 2, 1923] 



















‘THE ceramic industries formed the subject of the 
fourth of the series of lectures on ‘‘ Physics in 
Industry ’’ which are being given under the auspices 
of the Institute of Physics, and the lecture was given 
by Dr. J. W. Mellor on May 9 at the Institution of 
Electrical Engineers. Sir J. J. Thomson, president 
of the Institute, was in the chair. Eliminating such 
plications of physics as are common to other 
industries, Dr. Mellor dwelt only on specific applica- 
tions of sound, light, heat, electricity and magnetism, 
and mechanical science in the manufacture of pottery 
and glassware. He made it clear that, while in these 
industries much has been done to utilise physical 
principles and knowledge, there remains a very wide 
NO. 2796, VOL. 111] 







ray § 
rooms, but also gave Major Phillips the benefit of 
their experience in designing X-ray apparatus. 
‘The Rockefeller Gift has also rendered it possible 
to effect certain much-needed alterations and ex- 
tensions in the departments of bio-chemistry, pharma- 
cology, and physiology. On the ground floor the 
general bio-chemical laboratory receives an extension 
behind the anatomy theatre, providing additional 
aed for advanced students in bio-chemistry. The 
-chemical research laboratories are also enlarged 
by taking in the whole ground floor of the pharma- 
cology building, providing in this way two additional 
research laboratories and a private room for the 
professor of bio-chemistry. In pharmacology further 
mmodation for research is provided by dividing 
© present pharmacology lecture theatre into two 
oratories. The pharmacology lectures will be 
délivered in future in the physiology theatre. This 
department receives also two extra laboratories on 
the second floor of the physiology building in com- 
pensation for the ground-floor laboratories surrendered 
to bio-chemistry. 
‘A large part of the first, second, and third floors 
of the building connecting the present Institute of 
Physiology with the Institute of Anatomy is used for 
increasing the laboratory accommodation for research 
Sa rtysiology. 
‘Concerning the architecture, the Gower Street 
front is entirely in Portland stone ; the back portions 
in Arlesey brick with stone dressings to match the 
isting physiology and pharmacology buildings. 
The floor of the dissecting room, annexe, and pro- 
sectorium is’ of white mosaic, and the walls of white 
glazed brick. On the corridors is a strip three feet 

‘wide of quarter-inch cork carpet, with margins of 
white terrazzo in the basement, and of oak or pitch 
pine on other floors. A dado of terrazzo with green 
panels and white frames runs up the whole of the 
staircase and along the sides of the principal corridors. 
The floors of most of the working-rooms are cement, 
covered with linoleum. The steps and landing of 
the staircase are oak on concrete, with iron balustrade ; 
and the museum, library, periodical room, and 
entrance vestibule from Gower Street have oak floors. 
‘A passenger lift runs from the basement to the top 
of the building, serving all floors, and hand-power 
% are provided from the injection room down to 
the tank room, and from the tank room up to the 
annexe of the dissecting room. The whole of the 
building is steel frame construction. 
“Mt is of interest that the house in which Charles 
Darwin began the compilation of the notebooks for 
is ‘‘ Origin of Species ”’ is only four doors away from 
the new building, and it is hoped that eventually upon 
this site will be built a Darwin Institute of Anthro- 
pology and Biology which will worthily commemorate 
the greatest of English biologists. 

Applications of Physics to the Ceramic Industries. 
field in which present practice is crude and un- 
scientific, and where all the help which the physicist 
can yive is needed to replace obsolete, rule-of-thumb 
procedure by methods which are exact, efficient, and 
trustworthy. 
Up-to-date manufacturers are following with keen 
interest the various attempts now being made to 
roduce a mode of illumination to imitate natural 
light, for the matching of coloured glazes under 
artificial light is usually difficult and sometimes 
impossible. In one example quoted where the colour 
of a nickel-blue tile had to be imitated, it appeared 
that the copy was green in gas-light and blue in day- 
light. Many chrome colours which appear green in 
