654 CONSERVATION 



manufacture of briquetts, so commonly adapted to secure publicity and that the 



used in foreign countries, and the test- publications must be distributed with 



ing of these briquetts on locomotives care and expedition. Thus the Survey 



and naval vessels ; comparative tests of becomes a bureau of publication as well 



the producer-gas engine with the steam as of investigation, and here lies the 



engine and of the internal-combustion real test of its success in the service of 



engine using gasoline and kerosene as the people. 



well as alcohol ; coking and washing Publicity of results is secured by 

 tests which demonstrate the coking the preparation, publication, and dis- 

 possibilities of many of the Rocky tribution of the reports of the various 

 Mountain coals heretofore regarded investigations, geologic, geographic, 

 as non-coking ; smoke abatement in- hydrographic, and technologic, by the 

 vestigations. which have indicated the engraving and printing of the maps 

 conditions in steam boiler practice nee- representing the surveys, and by the 

 essary for securing more perfect com- distribution of news bulletins issued 

 bustion ; inquiries into the available weekly for use by the newspapers of 

 supplies of concrete materials and the the country. This news service de- 

 study of these constituent materials ; serves a further word inasmuch as it 

 the investigation of concrete as a struc- represents the Survey's point of di- 

 tural material for different purposes rect contact with the most efficient 

 and under different conditions with agency of publicity, the newspaper, 

 tests of concrete beams of different Advance notices of Survey publica- 

 ages ; comparative tests of different tions. summaries of reports of special 

 materials to determine their fine resist- interest, preliminary statements of the 

 ing qualities and strength at different statistics of mineral production, and 

 temperatures ; all these investigations news items regarding work in progress 

 have been carried forward and results in the different branches of the Survey 

 of the most practical kind secured, constitute the subject-matter of these 

 Over i,ooo inspection analyses have press bulletins. Their purpose is to 

 been made of coal purchased by the acquaint the public with the activities 

 Government on specifications, resulting of the Bureau and to advertise the re- 

 in the delivery of coal up to the fixed ports as issued, that the public may 

 standard of purity. This method, just secure promptly the results of the work 

 inaugurated in the Government service, that is supported by public money. In 

 of getting the coal it pays for and of this press-bulletin service there is no 

 paying for just what it gets, is worthy intention of advertising any one con- 

 of imitation by the general public. In a nected with the Survey, nor of creating 

 similar way all these technologic inves- public sentiment, nor of influencing 

 tigations, while made by the Survey public opinion, except as public opinion 

 primarily for the benefit of the Gov- may be molded by the facts presented 

 ernment, are in reality of even greater in the reports published by the Sur- 

 value to the public at large. Another vey. In short not only must the scien- 

 line of investigation has as its purpose tific economic investigations of the Sur- 

 the prevention of mine disasters, with vey be made to yield authoritative 

 the consequent appalling loss of human results, but these results must be given 

 life. Experimental work in the testing to the public. Whatever form of pub- 

 of explosives has just begun at Pitts- lication secures the greatest publicity 

 burg under the supervision of the without affecting the integrity of the 

 Survey. statement of these results, that form 



The explorations and investigations best serves the public, 



of the vSurvey realize their full purpose In the publication branch of the Sur- 



only as the results attained are pub- vey, there were issued in the fiscal year 



lished. The relation of the Survey to just closed: 127 books, comprising oyer 



the public demands that these results 10,000 pages, nine geologic folios, 



must be' presented in the form best eighty-seven new topographic maps. 



