High-resolution, full color images available online
Search, browse, read, and print yearbook pages
View college, high school, and military yearbooks
Browse our digital annual library spanning centuries
Support the schools in our program by subscribing
Privacy, as we do not track users or sell information
Page 101 text:
“
I I I I I 1 E
”
Page 100 text:
“
The prognosis z Slnniana mental Qtullege 1 1904 mutual if its of each form and the ardent advocates of the one can see no good in the other. Both have their application, and the dentist should no more confine himself to one form of porcelain than he sho-uld to one form of gold or silver. All high fusing porcelains contain silica, kaolin, feld- spar, a flux and the oxides of certain metals. Silica is the oxide of silicon, it is almost infusible and inso-lub-le in all acids except hydrofiuoric. It gives the fused porcelain a translucent appearance and adds strength. Kaolin is the silicate of aluminum and is a very refractory clay. This is added to porcelain to impart stability of fo-rm, and it is this pro-perty which permits it to be molded and carved. Relatively large proportions of kaolin tend to give porce- lain an opaque appearance. Feldspar is a double silicate of aluminum and potassium. On account of its ready fusibility, it serves to agglutinate the more refractory in- gredients, and when diffused throughout the mass imparts a semi-translucent appearance. The flux is composed of some of the following: glass, the carbonates of sodium and potassium, calcined sodium borate, sodium and alumi- num Huorid fcryolitej. One or mo-re of the materials is added to the silica, or feldspar, or both, and are used to render the porcelain more fusible. The basal ingredients of high fusing porcelain may be used in a formula for low fusing, but the fusing point is regulated by the proportion of Hux added to the formula. The flux is incorporated with the basal ingredients and the mass heated until the Hux agglutinates the refractory ma- terials. The process of fusing and grinding is continued until all the ingredients are thoroughly mixed. The action of the flux on the refractory materials increases the fusi- bility and the porosity of the porcelain. It is impossible to always fuse the porcelain so that there is no surplus overlapping the platinum. All margins of the porcelain overhanging thecavity walls are ground away with line stones and cuttle fish disks. If proper care is exercised in constructing the inlay, only a small amount of the glaze on the exposed surface need be destroyed. The glaze should be removed from the seat and walls in order to- obtain a better adhesion with the cement. This is done
Are you trying to find old school friends, old classmates, fellow servicemen or shipmates? Do you want to see past girlfriends or boyfriends? Relive homecoming, prom, graduation, and other moments on campus captured in yearbook pictures. Revisit your fraternity or sorority and see familiar places. See members of old school clubs and relive old times. Start your search today!
Looking for old family members and relatives? Do you want to find pictures of parents or grandparents when they were in school? Want to find out what hairstyle was popular in the 1920s? E-Yearbook.com has a wealth of genealogy information spanning over a century for many schools with full text search. Use our online Genealogy Resource to uncover history quickly!
Are you planning a reunion and need assistance? E-Yearbook.com can help you with scanning and providing access to yearbook images for promotional materials and activities. We can provide you with an electronic version of your yearbook that can assist you with reunion planning. E-Yearbook.com will also publish the yearbook images online for people to share and enjoy.
