SCIENCE-ADVERTISEMENTS for mid-year classes...- by L. EARLE AR- NOW, Instructor in *Physiological Chem- istry, University of Minnesota Medical School, Minneapolis, and HENRY C. REITZ, Ass't Chem- ist, Western Regional Research Laboratory, U. S. Department of Agriculture, Albany, Calif. About 650 pages. by VICTOR C. MY- ERS, Professor of Biochemistry, West- ern Reserve Univer- sity. 288 pages, 17 illustrations. PRICE, $3.50 INTRODUCTION TO ORGANIC AND BIOLOGICAL CHEMISTRY Discussing two closely related fields between its covers, this new text is unique-and rich in potential use. The selection of subject matter renders it useful and interesting to a wide variety of students-premedical, predental, home economics, agriculture, dietetics and physical education. Part I is a review of chemical fundamentals designed to re- fresh the student. Part II deals with organic chemistry- prefaced by suggestions of technics and methods for suc- cessful study. Part III is a summary of the more important phases of metabolism and nutrition, presented on the basis of a chemical outline. Every effort is made to correlate the study to the everyday life of the student throughout the text. LABORATORY DIRECTIONS IN BIOCHEMISTRY This new manual is flexible and can be adapted to the in- structor's needs. The course as covered here includes lec- tures, assigned readings, demonstrations and individual lab- oratory work. Space is provided for experiment results. Throughout, an effort is made to coordinate lectures and laboratory work, and clinical biochemistry is stressed. _ ~ * _ * - - - - -_- - -_- - _ _ _ _ The C. V. Mosby Company SCI 1/43 3525 Pine Blvd. St. Louis, Mo. following book(s): ........................................................................................... n Attached is my check. Charge my account. Dr. Address ................................. .............................. X ...................................................... ............. ................................................................................................................................................................................................................................................................... ......................................................................................................................................................................................................................................... JANUARY 1, 1943 7
Transcript
SCIENCE-ADVERTISEMENTS
for mid-year classes...-
by L. EARLE AR-NOW, Instructor in
*Physiological Chem-istry, University ofMinnesota MedicalSchool, Minneapolis,and HENRY C.REITZ, Ass't Chem-ist, Western RegionalResearch Laboratory,U. S. Department ofAgriculture, Albany,Calif. About 650pages.
by VICTOR C. MY-ERS, Professor ofBiochemistry, West-ern Reserve Univer-sity. 288 pages, 17illustrations. PRICE,$3.50
INTRODUCTION TO
ORGANIC ANDBIOLOGICAL CHEMISTRY
Discussing two closely related fields between its covers, thisnew text is unique-and rich in potential use. The selectionof subject matter renders it useful and interesting to a widevariety of students-premedical, predental, home economics,agriculture, dietetics and physical education.
Part I is a review of chemical fundamentals designed to re-fresh the student. Part II deals with organic chemistry-prefaced by suggestions of technics and methods for suc-cessful study. Part III is a summary of the more importantphases of metabolism and nutrition, presented on the basisof a chemical outline. Every effort is made to correlate thestudy to the everyday life of the student throughout the text.
LABORATORY DIRECTIONS IN
BIOCHEMISTRY
This new manual is flexible and can be adapted to the in-structor's needs. The course as covered here includes lec-tures, assigned readings, demonstrations and individual lab-oratory work. Space is provided for experiment results.Throughout, an effort is made to coordinate lectures andlaboratory work, and clinical biochemistry is stressed.
_~*
_* - - - - -_- - -_- -
_ _ _ _
The C. V. Mosby Company SCI 1/433525 Pine Blvd.St. Louis, Mo.
(Copyright, 1942, by Science Service)ELECTRON accelerator, whirling electrons up to 20,000,-
000 volts and producing x-rays of like power was com-
pleted, and a similar 100,000,000-volt machine is beingbuilt. A direct current x-ray generator operating at a
potential more than 4,000,000 volts was developed.An x-ray microscope has been devised which, by a pho-
tographic process, converts the usual diffraction patternof a crystal into an actual picture of the arrangements ofthe atoms in one plane of the crystal.New electron spectrometer, utilizing the varied slowing
up of electrons passing through a specimen, produces a
"spectrum" which aids in identifying the material, andsupplements the electron microscope examination.New ultra-fast oscillograph, with a beam sweeping at
18,000 miles per second, and timing to a few billionthsof a second, records the wave form of transients, light-ning flashes, and other oscillatory discharges up to 113megacycles.New scanning electron microscope makes use of tele-
vision principles to examine opaque objects (not possiblein the ordinary electron microscope), and reproduces thepicture on a telegraphic facsimile printer.An adapter has been devised which converts the ordi-
nary electron microscope into a diffraction camera, so
that in addition to the usual electron picture, the crystalor molecular structure of the specimen may also be de-termined.
Desk-size electron microscopes were developed, havingsimplified operation and much lower cost.
Chemical element 61, illinium, which does not occur innature, was produced artificially by atomic bombardmentwith the cyclotron, but quickly disappeared by radioactivedisintegration.New measurements of the "proper" life of 'the meso-
tron gave it 2.8 millionths of a second in place of 1.6millionths of a second previously estimated.The proposal has been made to use the freezing point
of benzoic acid, 122.37 degrees centigrade, for the stan-dardization of thermometers.Neutron pictures to supplement x-ray pictures showed
certain advantages; neutrons were also employed in geo-physical prospecting.
Synthetic cellulose was made for the first time.Hydrogen fluoride was found to be a catalyst superior
to aluminum chloride in the manufacture of syntheticrubber and of 100-octane gasoline.Methods were found for making many kinds of oil out
of any vegetable or animal fat.By the use of fusel oil, alcohol was made from agricul-
tural and industrial wastes without the expensive distil-lation process.New solvents of the nitroparaffin class were developed
for paints, lacquers and varnishes.
A solution of potassium, copper and arsenic saltshas been found an effective means of retarding decay intelephone poles.
Color photography at night from high flying airplaneshas been made possible by special filters and brilliantflash bombs of colored light.
Synthetic chewing gum was produced to replace chiclefrom tropical America.Bread molds were found superior to malt in alcoholic
fermentation.ASTRONOMY
The first planet outside our own solar system was dis-covered, a satellite of an obscure double star in Cygnus,that is a sixtieth the mass of the sun and about 16 timesthe mass of Jupiter.The brightest nova since 1918, Nova Puppis, rose to
brilliance greater than first magnitude,A remnant of Kepler's famous nova of 1604 was dis-
covered as a small fan-shaped cloud.A "Saturn" star, an intensely hot body surrounded
by a luminous gas ring four times the diameter of our
sun, was discovered.S Doradus, a star 600,000 times brighter than our sun,
was shown to be a double star, with each twin a giant.Three or four mysterious spectral lines in starlight were
explained by assuming that a substance impossible on
earth, CH, or hydrogen carbide, exists in the so-called"empty" space between stars.The mass of the moon was determined anew, this latest
value making it 1/81.271 of the earth's mass.
A new " window" in the atmosphere was discoveredwhen the observable spectrum in the infra-red region was
extended to 24 mu.
The most powerful magnetic field measured in a group
of sun-spots was recorded for the group visible to theunaided eye February 25 to March 1.The reddest star ever photographed was discovered in
the constellation of Monoceros.A nova or exploding star was discovered in the con-
stellation of Cygnus.New comets discovered were Whipple, Oterma I,
notable among them was a "family" of nine shocks inEcuador at the beginning of July.A gas well yielding pure nitrogen surprised its drillers
in Wyoming.A new device for sorting valuable particles out of low-
grade tin ores and other minerals was developed.Large-scale tests of sponge-iron production were un-
dertaken in order to relieve scrap shortage in steel pro-
duction.A robot weather station, suitable for installing on
mountaintops or uninhabited islands, was invented.An unprecedentedly wet season kept some central areas
of the country soggy during much of the summer, andcaused some floods.
There were several severe tornadoes; one of them, in
the Ozarks, killed 28, injured 200.A storm-caused tidal wave near Calcutta drowned more
than 10,000 persons.
No tropical storms of full hurricane strength reachedthe United States from the Carribean-Gulf region.A new branch of geological science made its bow:
paleogrostology, the study of fossil grasses.
An outflow of lava from Mauna Loa menaced the cityof Hilo, but stopped before doing damage.
BIOLOGICAL SCIENCE
Crops of corn, wheat, soybeans and several other prod-ucts broke all records, despite menacing farm labor short-ages and early frosts.An American scientific mission went to China to aid
in improving agriculture and soil conservation there.There was lively interchange of scientific personnel
and information between U. S. A. and Latin-Americanagriculture.The U. S. A. and Britain offered aid to the USSR in
reconstructing agriculture in the "scorched earth" re-
gions after the war.
Search for new sources of natural rubber includedenormous expansion of guayule acreage, importation ofhundreds of pounds of kok-sagyz seed from the USSR,efforts to organize collections of wild rubber in South andCentral America, and planting selected seedling andgrafted trees in the same tropical regions.The four great regional laboratories of the U. S. De-
partment of Agriculture concentrated efforts on war
problems.Day-and-night changes in temperature were found
necessary for the production of fruit and seed by plants.Tobacco mosaic virus kept 28 years in a bottle was
found still able to produce disease.The country-wide Victory Gardens movement was suc-
cessfully carried through.Domestic production was undertaken in many crops
hitherto imported: hemp and other fibers, cork oak, drugplants, flavoring herbs, etc.
The number of plant patents passed 500.Mechanization of beet sugar production was advanced
by invention of a machine for planting treated seed, andof another to top harvested beets; both previously handwork.Many new insecticides, both natural and synthetic,
V7PPLEMENT VoL. 97, No. 2505
were tried, in search for substitutes for previously im-ported pyrethrum and rotenone.A substitute for tapioca, both for food and "stickum"
for stamps, was found in "Leoti" sorghum seed.Thousands of sea birds became U-boat victims, killed
by oil released from torpedoed ships.
ARCHEOLOGY, ANTHROPOLOGYNew Stone Age implements were found in the famous
cave on Mt. Carmel in Palestine where only Old StoneAge records had previously been known, thus closing along gap in the site's pre-history.
Cannibals and head-hunters in some South Sea islandsreverted to old practices, due to removal of govern-mental controls and missionary influences by Jap invasion.
Despite a wartime spurt in the birth rate, the popula-tion of the United States is becoming stationary, statis-tical studies indicated.No human artifacts were uncovered along the whole
length of the new Alaskan Highway.The smallest known normal human skull was found in
an ancient cemetery in coastal Peru.
PSYCHOLOGY AND PSYCHIATRYThe number of brain cells in baby rats was increased
artificially by injecting the mothers with pituitary growthhormones before the birth of the young, but their abilityto learn was not increased.A test for color aptitude has been prepared for evalu-
ating workers in industries requiring accurate discrimi-nation of small color difference.
Experiments showed that a change in the pitch ofsound may be heard although there has been no shift inthe point of maximal stimulation on the basilar membraneof the cochlea.By stimulation of the eye with a barely perceptible
electric current, it is possible to distinguish between blind-ness due to disease of the eye 's retina and blindnesscaused by disease of the nerve.
Brain wave rhythms which are blocked out when theeyes see light can be used to detect cases of faked com-plete blindness.By leaving intact a tiny isolated blob of pituitary
gland and hypothalamus to maintain the water and sugarbalance of the body, it was possible to discover that ani-mals lacking 95 per cent. of the brain can walk, jump,claw and right themselves.A single application of alum to the motor area of the
brain made animals subject to repeated epileptic-likeseizures when exposed to loud noise, apparently by per-manent alteration of the brain cells.
Brain injuries resulting in spastic paralysis do notresult in any characteristic personality traits, survey of123 child patients revealed.The character of brain activity, which changes with
increasing age during the period of growth, was observedto continue to change toward the fast end of the brainfrequency spectrum during adult life.A monkey was taught to distinguish objects on the basis
of such qualities as mobility and color, demonstratinga capability for this kind of abstract thinking.
(To be continued)
.
JAUR 1,19 3SI N EA VE TS M NS1
§Zhe AUTOTECHNICON
U. S. Patent No. 2,157,875 and Other Patents Pending
The TECHNICON CO.NEW YORK
JANUARY 1. 1943 SCIENCE-ADVERTISEMENTS 11
VOL. 97, No. 250512 SCIENCE-ADVERTISEMENTS
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