Salt Lake Telegram | 1932-12-26 | Page 4 | Science News

S SCIENCE C I E N C ENE NEWS W S Hit J It may be better for automobiles to slip and U slide on icy pavements than to reduce the skidding skidding skid skid- ding with the commonly used chemicals salt and its near relative calcium chloride Tests conducted by the Michigan state highway department indicate that both sodium chloride and calcium chloride arc are injurious to concrete pavements because they weaken weak weak- en the tho mortar bond between the sand and rock Inthe in inthe inthe the concrete It makes little difference whether a large or a relatively small amount of chemical is used B. B C. C Tiney riney of the Michigan highway department ex explained ex- ex in a report to the highway research board meeting in Washington The The Injury injury will be Just as great in either cither case A few limited tests however indicate that oil put on the concrete before the initial in in- set prevents the injurious effect The chemicals are usually applied with sand or cinders to partly melt the ice and imbed the abra abra- The tests were made on day 28 28 old ld gravel concrete 0 0 0 OTA j A plundered tomb with a n few remnants of its itsE I E- E U valuables left has b been n discovered at the In Indian Indian In- In dian city of Monte Alban by a woman archaeologist gist st Senorita Guzman In the tomb were found a necklace and ear ornaments of jade and anda a tiny jade carving of very fine workmanship Only fragments of human bones could be found These were once painted red judging from traces I of ot paint remaining remaining- Senorita Guzman discovered this tomb and an another another another an- an other unexpectedly during excava excava- In the other tomb lay two occupants and an array of 27 pottery vessels of or Indian style and the bones of or an animal Attention of of ot the excavators was attracted to the teeth of one of the buried Indians Two Incisor teeth were filled into like forklike prongs each tooth being bifurcated