abstracts: technology 39 



County, Oklahoma. As this discovery was made at a place more than 

 20 miles distant from any other known oil and gas development, it has 

 attracted considerable attention, winch is justified by the presence of a 

 large anticlinal fold, a type of structure that should be favorable for 

 the accumulation of oil and gas. A description of the anticlinal fold 

 and a discussion of the possibilities of developing an oil and gas field 

 here are given. R. \y # S. 



PALEONTOLOGY. — North American Upper Cretaceous corals of the 

 genus Micrabacia. Lloyd William Stephenson. U. S. Geo- 

 logical Surve3 r Professional Paper 98-J. Pp. 115-131, with 4 

 plates. 1916. 

 The report describes seven species and two varieties of corals of the 

 genus Micrabacia from the United States, all but one of which, M. 

 americana Meek and Hay den, are new. All are from the Atlantic 

 and Gulf coastal plains, except M. americana and its variety multi- 

 costata from the Montana group of the Western Interior. Of the 

 coastal-plain species, M . cribraria is from the upper part of the Exogyra 

 ponderosa zone (North Carolina — Alabama), and the remainder are 

 from the Exogyra costata zone of Maryland, Georgia, Mississippi, and 

 Texas. The American species are compared with the type species of 

 the genus, M . coronula Goldfuss, a description and figures of which are 

 included, from Essen, Prussia. Each of the species has a small disc- 

 shaped corallum, the largest, M. rotatilis, being only 9 mm. in diame- 

 ter; in order to illustrate the characters it is necessary to magnify them 

 four to eight times. L. W. S. 



TECHNOLOGY. — The recovery of paraffin and paper stock from waste 

 paraffin paper. W. H. Smith. Bureau of Standards Technologic 

 Paper No. 87. Pp. 4. 1916. 

 This paper describes a process for the recovery of the paraffin and 

 paper stock from waste paraffin paper. The waste is pulped with 

 exhaust steam in a vertical boiler. The wax rises to the surface and 

 is drawn off with the hot water through a screen, the stock settling 

 to the bottom of the boiler. The stock is transferred to a beating 

 engine and further treated for the removal of the residual paraffin. 

 Paper prepared from the recovered stock was free from wax and satis- 

 factory in every respect. Practically all of the paper stock is recovered, 

 but about ten per cent of the paraffin in the waste is lost during the 

 process. W. H. S. 



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