SCIENCE. 



[Vol. XIII. No. 313 



SILKS. 



INDIA PONGEES 



AND 



CORAHS. 



Unrivalled for Darabiiity & fear. 



Spriusf Styles show great novelty of 

 color and design. 



New York. 



Insurance. 



BliA^ClC SILKS. 



We are receiving large importa- 

 tions of Black Peau de Sole Silks, 

 from $1 to $2.50. 



Genuine Peaii de Soie possesses 

 Softness and Richness of appear- 

 ance, in a greater degree than any 

 other make of Dress Silk. It is also 

 very durable. The prices marked 

 by us are considerably less than 

 manufacturers ask. 



This is especially worthy of your 

 attention. "Write for samples. 



JAMES McCEEERY & CO. 



BROADWAY AND ELEVENTH STREET, 



JiEW YORK. 



DELAY IS DANGEROUS. 



We call attention to the new form of Accident (indem- 

 nity) Insurance policies, which are written by the Mer- 

 chant's Casualty Insurance Association, 21 Park Row, 

 New York City. John S. Purdy, Secretary. These policies 

 cover weekly allowances of from $10 to $25, according to 

 occupation, at a cost of only $6 a year exclusive of the 

 cost to join, which is $5 payable once only. The public, 

 as a rule, carry life insurance, and the ordinary accident 

 policies issued by companies, paying a sum in case of 

 death, is not so desirable as one of these indemnity policies 

 in case of accidents, which are so plentiful in this fast age 

 with its railroad horrors, fast driving, electric wires and 

 other countless iorms dangerto which the public is con- 

 stantly exposed. The fact of the Association having no- 

 unpaid claims, and its having just passed an examination 

 by the Insurance Department of New York State, shows 

 that the management is liberal with its policy-holders 

 and conservative in its action. The Association also de- 

 sires to secure energe tic Agents in every village and town, 

 to whom territory and favorable terms will be given. 



GOOD NEWS 

 TO LADIES. 



Greatest muucemeut^Ter of- 

 fered. Kow'8 your time to get 

 up orders for our celebrated 

 leas and Coffees, and secure 

 a beautiful Gold Band or Woss 



Rose China Tea Set, Dinner Set, 



Gold Band Moss Rose Toilet Set, "Watch, Brass Lamp, 



or "Webster's Dictionary. Forf ull particulars address 



THE GREAT AMBRICAIV TEA <'0., 



P. O. Box 289. 31 and S3 Vesey St., New York, 



Sprague Electric Railway and Motor Company. 



For Stationary or Railwav Work, 



for Mining or Engineering 



operations the SPRAGUE IVIOTORS 



are unexcelled- 



Estimates given for complete 

 Power installations. 



Send for Circulars and full 

 Information. 



16 and 18 BROAD STREET, NEW YORK. 



ELECTRICAL TESTING BDREAH, 



Johns Hopkins University, Baltimore, Md, 



Resistance CoiIs,and Boxes Compared. 



Am meters and Volt meters calibrated. 



Condensers standardized. 



Primary and Secondary Batteries Tested. 



Efficiency of Dynamos and Motors Deter- 

 mined. 



Insulation of Cables and Wires Tested. 



Etc., Etc. 



Circulars describing Methods Used, Prices, 

 Etc., sent on Application. 



Address as above. 



Schools. 



Connecticut, New Haven, 

 TV/TRS.CADVS SCHOOL FOR YOUNG LADIES. 

 XTX Prepares for Smith and Wellesley, and admits to 

 Vassar by Certificate. Circulars. Early application 

 necessary. 



Vermont, Burlington. 

 \TERMONT EPISCOPAL INSTITUTE. Boarding 

 • School for Boys. Prepares for College or Business. 

 Military drill. Terms moderate. Fifty-seventh half- 

 year opens September ^, 1888. Send for catalgue. 



K. H. ROSS, A.M., Principal. 



R. ELLIS & CO. 



BUSINESS, HOTEL AND PATENT BROKERS, 



AUCTIONEERS, ETC. 



JVo. 176 Bno^Bjt^^ir, 



Room 46. 



JVevD York, 



1 Advised free 0/ charge. 



Wants. 



W 



ANTED.— A teacher for the Natural Science; 

 History, who is also competent for the positit 

 late Principal, in a fiouri-sh?ng private schoool. 

 P. O. Box 385, Plainfield, N.J. 



Ad- 



A Harvard graduate desires engagement as teacher of 

 higher English* branches, such as composition, rhetoric, 

 literature, history, political ecouomy, mathematics. 

 Address J. B. H., 



Science office. 



'0 EMPLOYERS, 



Having purchased, the fixtures, good will, &c., of 

 the NEW YORK EaPLOYMENT BUREAU, at No. 

 681 BROADWAY, in this city, we request the pat- 

 ronage of the public In the future. We desire to 

 fill a long-felt want for an employment bureau, 

 where only the best grade of male help is dealt in, 

 and it is our aim to send ONLY eucti help as is or- 

 dered in every instance, and our patrons can rely 

 on us to send strictly first-ciasshelp, the references 

 of whom we personally investigate before sending 

 to any one. We simply request a trial, and are con- 

 vinced that we will give saiisfactiou in every case. 

 We have on hand help in every branch, which we 

 can send upon receipt of telegram or letter, AND 

 FOR WHIuH WE MAKE NO CHARGK TO AN EM- 

 PLOYER. 



NEW YORK EMPLOYMENT BUREAU, 



(AS EEORGANIZED). 



KIMBALL'S 



STRAIGHT CUT 



CIGARETTES. 



Unsurpassed in quality. 



Used by people of refined taste. 

 Highest award at Brussels, 1888. 

 The finest smoking mixtures are of 



inufacture. 

 Fifieen First Prize Medals. 

 W.\I. S. KIMBALL & CO . 



Rocheuer. N.Y. 



Readers of Science 



Co7'}'espondi)ig with or visiting A dvertise?'s 

 will confer a great favor by mentioning the paper. 



