September 15, 1893.] 



SCIENCE. 



153 



stick, forming loops less than an inch in diameter by 

 bringing the projecting ends of the rawhide and seizing 

 .)^C>j^fast to the shaft. Just below these finger loops or 

 stirrups were a long chalcedony knife or arrow blade, 

 the tooth of a lion and a concretion of hematite seized 

 by a plentiful wrapping of yucca cord. If the readers 

 of Science will recall the Bourke example from Lake 

 Patzcuaro, with its long, barbed spear with shaft of 

 cane, he may follow me further and believe that a bit 

 of cane and a spear head of chalcedony attached to a 

 tang or foreshaft of wood lying in the same case, and 

 pointed out to me by Mr. C. C. Willoughby, belonged to 

 the same outfit. This is the first instance of finding the 

 ancient atlatl, figured in the codices and described by 

 Mrs. Nuttall. It also connects the Cliff dwellers with 

 the Mexican peoples. O. T. Mason. 



Sept. 3, 1S93. 



Water Analyses. 



Fear of cholera has caused waters to pour in floods into 

 some of the analytical laboratories of Europe, and it is 

 more interesting than reassuring to observe the methods 

 followed in dealing with this accumulated work. 



In the laboratory of one public analyst, the writer saw 

 a large collection of water samples, as yet unopened, from 

 various localities. 



These samples, some of which were weeks old, had been 

 collected in a variety of vessels, principally claret and 

 whiskey bottles, and the corks employed were often old 

 ones. 



When one considers the excessive care required for 



water sampling, the thought that the above lot were 

 doubtless taken by inexperienced hands, with the aid of 

 vessels certainly old and probably unclean, does not in- 

 crease one's faith in the value of the analytical results. 



Much to my surprise, I also saw in one laboratory the 

 old writing-paper jjacking for connecting the retort with 

 the condenser, a method of union long since discarded for 

 something more reliable. It is so easy a matter to ruin a 

 water analysis by indifferent attention to the proper set- 

 ting up of the apparatus for the " albuminoid ammonia " 

 process that modern practice discards, as inefficient, sev- 

 eral recommendations made by Wanklyn, the originator of 

 the method, and among them the j)aper packing men- 

 tioned. 



In short, without wishing to be over-patriotic, my ob- 

 servations here lead me to the belief that Americans do 

 not have to go abroad in order to gather information as 

 to the most suitable methods for making an examination 

 of potable water. William P. Mason. 



Stuttgart, Germany, Aug. g. 



The New Tork Shakespeare Society has begun to re- 

 print, in its Bankside edition, the archaic texts of the 

 seventeen plays first printed in the Heminges and Condell 

 Folio of 1623. The first of these plays, The Tempest, 

 will leave the press in a few days. Of these new volumes 

 but 500 copies are printed, as before, hand numbered to 

 correspond with the 500 sets of the prior twenty vol- 

 umes, with which they are of course uniform in style, size, 

 price, etc. 



Horsford's Acid Phosphate 



Is the most effective and agreeable 

 remedy in existence for preventing 

 indigestion, and relieving those dis- 

 eases arising from a disordered 

 stomach. 



Dr. W. W. Gardner, Spring- 

 field, Mass., says, "I value it as an excel- 

 lent preventative of indigestion, and a 

 pleasant acidulated drink when proper- 

 [Y diluted with water, and sweetened." 



Descriptive pamphlet free on application to 



RuMFORD Chemical Works, Providence, R. I. 



Beware of Substitutes and Imitations. 



For sale by all Druggists. 



[Free of charge to all, if of satisfactory character. 

 Address N. D. C. Hodges, 874 Broadway, New 

 York.] 



For a rare chance to get a first-class microscopic- 

 al outfit write for full particulars to box 125, Sel- 

 lersville, Bucks Co., Pa. 



For sale or exchange. — A fine collection of Lep^ 

 idoptera, native and exotic. For particulars ad- 

 dress Addison Ellsv.'orth, Binghamton, N. Y., care 

 Republican. 



For sale or exchange for works on entomostraca, 

 WoUe's "Desmids of the U.S.," Hentz "Spiders of 

 the U. S.," The Araer. Entomologist & Botanist. 

 Vol. 2, The Amer. Entomologist, Vol. i, Harris's 

 "Insects Injurious to Vegetation," colored plates, 

 copy formerly owned by Townend Glover. " 

 Dwight Marsh, Ripon, Wis. 



"The Conchologist : a Journal of Malacology,' 

 Vols. I and 2, with wood cuts and plates, value 12 | - 

 will exchange for any works or pamphlets on Amer- 

 ican Slugs or Anatonry of American Pishes. W. E, 

 CoUinge, Mason College, Birmingham, England. 



Exchange — The undersigned is desirous of ob- 

 taining correspondents interested in macro-lipidop- 

 tera, in Alaska, the far Western, Southwestern 

 and Southern States. Will also exchange rare 

 lepidoptera for entomological literature. Levi W. 

 Mengel, Reading, Penn. 



Wanted to exchange— Medical books, Obstetri- 

 cal Transactions, London, Works of Sir J. Y. 

 Simpson, Beck's Medical Jurisprudence. Hand- 

 book for the Physiological Laboratory, by Burnton, 

 Foster, Klein and Sanderson, Quain's Anatomy, 

 and about fifty others. Catalogues given. Want 

 Ge.ological, Botanical and Microscopical books in 

 exchange. Dr. A. M. Edwards, 11 Washington St. 

 Newark, N. J. 



Wants. 



COR SALE.— Volumes V. and VI. of the "Explor- 

 ' ations for a Railroad Route from the Missis- 

 sippi River to the Pacific," 1857, halt calf, in good 

 condition; a large number of colored and uncolored 

 plates of Mammals, Birds, Fish, etc., etc. On 

 receipt of $7.00 will send to any ordinary point in 

 the U. S., express paid. These volumes are now 

 rare. Address Dr. Shufeldt, Takoma Park, Dist. of 

 Columbia. 



A YOUNG woman who has been an assistant for 

 '1 a literary and scientific man desires a similar 

 position. Is an experienced and accurate stenog- 

 rapher and typewriter, thoroughly educated, and 

 sufSciently familiar with literary work to write, in- 

 dependent of dictation. Has some knowledge 

 of the Spanish language. Will go to any part of the 

 United States. Address, Box 147, Ravenna, Ohio 



A GRADUATE of an American Polytechnic insti- 

 ^ tution and of a German University CGottingen) 

 seeks a position to teach chemistry in a college or 

 similar mstitution. Five years^ experience in 

 teaching chemistry. Address Chemist, 757 Gary St. 

 Brockton, Mass. 



\X/ ANTED. —A position as teacher of Biology, by 

 »» an experienced teacher, a college graduate 

 with four university post-graduate courses in the 

 Sciences. Good endorsements, and eighteen years' 

 experience. Address A. N. Somers, La Porte Ind 



WANTED.— Assistant in Nautical Almanac ofiice 

 Navy Department. The Civil Service Com- 

 mission will hold an examination on August 15 to 

 fill a vacancy in the position of assistant (computer) 

 in the Nautical Almanac office. The subjects will 

 be letter-writing, penmanship, trigonometry, rudi- 

 ments of analytical geometry and calculus, loga- 

 rithms, theory and practice of computations, and 

 astronomy. Each applicant must provide himself 

 with a five-place logarithmic table. The examina- 

 tion will be held in Washington, and if applications 

 are filed in season, arrangements may be made for 

 examinations in the large cities. Blanks will be 

 furnished upon application to the Commission at 

 Washington. 



