2i2 



SCIENCE. 



[Vol. XV. No. 376 



letter in Mr. Feet's possession gives any other senfe, it has been 

 tampered with by some one desiring to make mischief. The re- 

 marks that I make at the end of this letter (written several years 

 ago, and now for the first time pubhshed by Mr. Peet) show 

 that I was opposed to theorizing upon the subject, and used the 

 term "pile-structures" throughout the letter. Reasons for use 

 of these terms, let me repeat, have been referred to, as above 

 stated. In regard to the quotations from the Peabody Museum" 



INDUSTRIAL NOTES. 

 Automatic OH-burning Steam-Engine for Electric Lighting. 

 The compact electric-lighting plant shown in the illustration 

 has been found to work satisfactorily in places where a com- 

 paratively small number of lights are required, and where the 

 expense of operation must be reduced to a minimum. One such 

 plant has been for some months furnishing light in a church at 

 ' Fitchburg, Mass. Power is furnished by a Shipman automatic 



A COMPACT ELECTRIC-LIGHTING PLANT. 



reports, I have to say that its editor was perfectly free to express 

 his opinions upon the subject, whether he accepted my fish-weir 

 theory or not. So far, I have not yet made any definite report 

 upon the subject, from lack of time to work the material up. 

 There is no manuscrijit in the hands of the Peabody Museum, 

 upon pile dwellings or river- dwellings in North America, await- 

 ing publication, as has been asserted. Hilboene T. Ceesson. 

 PMladelpbia, AprU 11. 



oil-burning engine, which was illustrated and describedjin 

 these columns about a year ago. The dynamo furnishes current 

 for fifteen 32-candle-power incandescent lamps, six 25-candle- 

 power lamps, and five 16-candle-power lamps. The fuel being 

 oil, supplied automatically as required, and the water-supply, 

 steam-pressure, and speed being automatically regulated, the 

 plant requires scarcely any attention other than to start and 

 stop it, and is said to give entire satisfaction. 



Purification of air by ventilation has never been 

 satisfactory, but rather a delusion and a snare, es- 

 pecially to teachers who have been defrauded by its 

 pretentions and not benefited by its accomplish- 

 ments. Mature people can point to no efficient, 

 successful ventilation. Every system in the last 

 twenty-five years has been tried or is being tried, 

 but to no satisfactory purpose. The cry for purifi- 

 cation in school-rooms and other public institutions 

 throughout the country is more heart-rending than 

 ever before. Ventilation is abortive. Disinfection 

 alone can b9 relied upon as a means of purification. 

 The Sherman "King" Vaporizer is the only known 

 device that is warranted to absolutely accomplish 

 this. They are used in hundreds of school auditori- 

 ums and other public institutions in Boston, Spring- 

 field, Holyoke, Worcester, Chicopee, Hartford, and 

 other places, as well as in innumerable private 

 dwellings and everywhere with the most gratifying 

 results. They never fail to purify everyplace where 

 they are located. This wonderful purifier is contin- 

 uous, requiring but a moment^s care once in from 

 two to three months. The cost of supporting it is so 

 trifiing as not to need consideration. It is inexpen- 

 sive, agreeable, compact, absolute and interesting. 

 Names of prominent officials in any of the above 

 places will be furnished, to facilitate direct inquiry, 

 if desired. Testimony to all above taata—absolufehj 

 convmci7i(/— furnished by agent for New England at 

 45Kilby St.. Boston, Sherman "King" Vaporizer Co. 



If you have .flOO, |1,000 or $1,000,000 

 for which you are seeking for a profitable 

 investment, write to James W. Greene, 

 West Superior, Wis. 



Inquiry costs nothing. Reference by per- 

 mission to The Editor of Science. 



CATARRH. 



Catarrhal Deafness— Hay Fever. 



A NEW HOME TREATMENT. 



Sufferers are not generally aware that these 

 diseases are contagious, or that they are due to 

 the presence of living parasites in the lining 

 membrane of the nose and eustachian lubes. 

 Microscopic research, hovi'ever, has proved this 

 to be a fact, and the result of this discovery is 

 that a simple remedy has been formulated where- 

 by catarrh, calarrhal deafness and hay fever are 

 permanently cured in from one to three simple 

 applications made at home by the patient once 

 in two weeks. 



N.B. — This treatment is not a snuff or an 

 ointment ; both have been discarded by repu- 

 table physicians as injurious. A pamphlet ex- 

 plaining this ntw treatment is sent free on 

 receipt of stamp to pay postage, by A. H. Dix- 

 on & Son. 337 and 339 West King Street. 

 Toronto, Canada. — Christian Advocate. 



Sufferers from Catarrhal troubles should care- 

 fully read the above. 



Addres 

 York.l 

 I Wanted— T 



Exchanges. 



of charge to all, if of satisfactory character. 



D. C. Hodges, 47 Lafayette Place, Ne 





IGEHTSW4HTEDte°]STAmE>«?'Jfa'fe 

 opportunity. Oeo. A. Scott, 848 Broadwaf ,' N. Y. 





of Dodecaiheon Meadia^ 

 her wild flowers, native of 

 lilies. D. E. VVillard, Cu- 

 , Albion Academy, Albion, Wis. 

 ber of plants from Maine, Connecticut, 

 Indiana and Illinois for exchange. Southern and west- 

 ern exchanges preferred. Address, enclosing lists, L. N. 

 Johnson, 223 Chicago Ave., Evanston, 111. 



For Exchange — Fourteen volumes Encyclopedia Brit- 

 annica (Stoddard's ninth edition), bound in leather— part 

 in original wrappers, all as ntw— can arrange to furnish 

 " ed to complete 



1 Natl 



alist' 



Wa 



alls 



CHANCE FOR ALL 



To Enjoy a Cup of Perfect 

 Tea- A TRIAL ORDER of ri^ 



pounds of Fine Tea, either Oolong. Ja- 

 pan, Imperial, Gunpowder, Young Hy- 

 son, Mixed. Knelish Breakfast or Sun 

 Sun Chop, sent Dy mail on receipt of 

 S2 00. Bexiarticularandstatewhattind 



brated Teas, Coffees and Balilnp; Powder. For full particu- 

 lai-3 address THLE QEEAT AMERICAN TEA CO. 

 P. O. Box 389. 31 and 33 Vesey St., New York. 



