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Image from page 11 of “Observations on the rare earths : yttrium chloride and the atomic weight of yttrium” (1912)
Freiberg
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Identifier: observationsonra00egan
Title: Observations on the rare earths : yttrium chloride and the atomic weight of yttrium
Year: 1912 (1910s)
Authors: Egan, James Everett
Subjects: Rare earths Yttrium Theses
Publisher:
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

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aoh and Company, Begleitservice Freiberg i. Saxony, fifteen kilograms of Euxenite andten kilograms of Fergusenite, also large quantities of Uonazite residues fur-nished by the Welsbaoh Company, thru the courtesy of Dr. H. S. Niner. Thematerials for the present work were obtained from the first two sources andthe procedure for Oadolinite and Xenotime only will be given. Ten kilograms of Gadolinite were pulverised in a ball mill and thentreated with an excess of concentrated hydrochloric acid with the addition ofa little nitric acid from time to time. This was continued until decomposi-tion was complete, and finally the mass was evaporated to dryness to dehydratethe silica. The residue was-treated with water, the silioa filtered off, andthe rare earths precipitated from a slightly aoid solution with oxalic acid.The oxalates were then washed by deoantation. Experience showed that the best and most rapid way to carry out an oxalicacid precipitation was to have both solutions hot. A small quantity of the

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aoid was poured into the rare earth solution without stirring, since the pre-cipitate which was in a viscous state would gather into a large ball whenstirred, which hardened and prevented thorough washing. After a few minutesthe precipitate had solidified and the solution was stirred and an excess ofoxalic acid added. A fine white precipitate was obtained which settled rapid-ly and was easily washed. The Xenotime oxalate was purchased as such from Drossbach and Company.It consisted principally of the earths of tha yttrium grour and contained buta small per oent. of the cerium earths. METHODS OF FRACTIONATION.Separation into the Cerium and Yttrium Groups.-The materials werp splitinto the cerium and yttrium groups roughly by converting the oxalates to theanhydrous sulphates by mixing the dry oxalates to a thick paste with concen-trated sulphuric acid and igniting till no more fumes came of f, then dissolv- i) 2) ing in ice water and stirring with solid sodium sulphate (Gibbs , Erk ,3) J

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Image from page 239 of “A treatise on orthopedic surgery” (1910)
Freiberg
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Identifier: treatiseonorthop1910whit
Title: A treatise on orthopedic surgery
Year: 1910 (1910s)
Authors: Whitman, Royal, 1857-
Subjects: Orthopedics
Publisher: Philadelphia and New York, Lea & Febiger
Contributing Library: Columbia University Libraries
Digitizing Sponsor: Open Knowledge Commons

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Normal femur from same subject. (Freiberg.) weight and strain are for any reason transferred to another part,its structure is strengthened there, and correspondingly weak-ened at the point from which the strain has been removed.With this change in the internal structure a change in the ex-ternal contour keeps pace. For, according to this theory, theexternal contour represents mathematically simply the last curveuniting the ends of the various trajectories which make up theinternal structure.16 242 OBTEOPEDIC SUEGEB¥. For the further exposition of this theory I quote from Frei-bergs-^ review and abstract of Wolffs^ final article. In showing that improper static demands made upon anextremity resulted in the formation of new masses of bone uponthe surface of the bone of this extremity, or that they producethe disappearance (atrophy) of bone masses according to thenature and degree of these disturbances in static requirements, Fig. 181.

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Section of femoral head of a paralytic idiot, aged thirty-five years, showing theextreme atrophy caused by disuse. (R. T. Taylor.) it has at once been shown in what manner deformities have theirorigin. For these transformations on the surface of bone arenothing other than deformities in the wider or narrower senseof the term. Taking genu valgum or habitual scoliosis as an example, thedevelopment of a deformity in the narrow sense is thus ex-plained. In the beginning of either of these conditions the shapeof the bones is perfectly normal. As the result of excessivefatigue in their too weak muscles the patients are frequentlyassuming a faulty position of limb or body; they seek to controlexcessive excursions of their joints by the interference of thearticular structures themselves instead of by muscular activity.The result is a continual alteration in the static requirementsmade upon the bones and the internal architecture; internal and ^Annals of Surgery, July, 1897; and American Journ

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Generally, as soon as the summer growing period has finished, and winter starts, the canna stops its heyday. Now is a great time for cut back the plant to walk out and divide the vignoble. Make sure you have some bulb or roots for your new plant to establish itself in the new town. I usually mulch right extraordinary of all the cannas therefore do not even appear to reside the garden bed. Using short weeks, they appear as if small bean shoots displaying healthy green leaves and bursting with strong popularity. Normally within a couple of months the cannas get home flowering when more.

Although defensive midfielder Thomas Hitzelsperger is going of form, despite moving from Begleitservice delux to Lazio to as well as retain his place in the national team, Germany must be organised enough to not concede lots of goals.

The Warriors tallied twice in 1st period, beginning with Demi Gardner tipping in a rebound. Their second came when Sierra Hanowski found Marvin globe center slot and she put Warroad up by two.

When our beers were brought to us, Irealised i was a little saddened observe that neither brew had much of an head on there. Once you’ve been in Germany for awhile, then to get accustomed to beers with wonderful rich, foamy goes. These two looked pretty sad in comparison and reminded us in which were inside American establishment. The burgers were okay, nevertheless was really disappointed the particular french fries, which were kind of dry and tasted stale.

Joules was first proved by an English physicist James Prescott Joule and was subsequently named after your canine. Although Mr. Prescott discovered this value of Joule during his work ended up being not he who first introduced expression but Expert. Mayer of Begleitagentur Heilbronn. A joule is one of energy used in the System Internationale which implies the amount of energy needed for you carry out a certain kind of work when you apply a force of 1 Newton above a distance of a single meter.

Escort Berlin Anel Dzaka is a 28-year old ex German under-21 midfielder born in Sarajevo. He currently plays for TuS Koblenz a team the actual planet Bundesliga 2 division. He was an unused substitute in ultimate.

Another senior who had not really been a factor until this halloween season is defensive tackle Tom Nardo. Last week, Nardo earned Big Ten Conference Defensive Player of a few days honors after recording a career-high 12 tackles against Ulm.

AND for people with not ordered one of your companion legendary old world recipe pizzas from MILANO Cafe, you’re missing elsewhere. Its the same recipe that Unexpected Your parents enjoyed out of the downtown Lima location.

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