l82 



SCIENCE. 



[Vol. XV. No. 371 



It is well known that over the plains in Colorado crops are 

 now being raised without irrigation in places where this was 

 iormerly supposed impossible. This is in large part due to the 

 adoption of improved methods of cultivation specially adapted 

 to the climatic conditions. The farmer early observed the dry 

 weather of June, and came to expect it as a rule. On these 

 plains successful agriculture was possible only after a careful 

 study of the June drought. At the present time the aim is 

 to have the times of planting so fixed that at the time of this 

 drought each crop shall be at that stage of its growth in which 

 experience shows it can best endure the dry weatlier. 



G. H. Stone. 



Colorado Springs, March 5. 



The Fiske Range-Finder. 



With reference to the very interesting suggestion of Mr. J. 

 F. Dennison concerning my range-finder, which appeared in 

 your issue of Feb. 28, I can only say that the plan which he 

 suggests has been the subject of much thought on my part, and 

 has been sketched out in many modified forms. The only 

 ■objection to it is the very commonplace, but very potent one, 

 that the end attained is hardly worth the ajaparatus required. 

 Some person must be at hand to read the distances indicated, 

 and he can very easily move the contacts himself. As a 

 general principle, I think it is agreed that mechanism should 

 never be introduced where it can be avoided, for mechanism is 

 liable to disarrangement; and simplicity should, it seems to 

 "me, be the aim of all invention. 



Bradley A. Fiske, U.S.N. 



New York, March 5. 



INDUSTRIAL NOTES. 

 A New Draughtsman's Protractor. 



The protractor shown in the accompanying cut is made from 

 -one-sixteenth inch sheet steel, and is light and durable. The 

 length of the blade is eight inches and a half. Tlie graduations 

 read to degrees, and the vernier reads to two minutes. This 

 protractor is chiefly used in connection with a T-square or 

 straight-edge. It can be quickly and accurately set by hand to 

 any angle. A lever is, however, provided as of possible advan- 

 tage in obtaining very fine settings. 



There are no projections on either face of the instrument, 

 and consequently it can be used on either edge of the blade or 



either side up. This makes it particularly convenient in 

 dividing circles, transferring angles, drawing oblique lines at 

 right angles to each other, or laying off given angles on each 

 side of a vertical or horizontal line without changing the 

 setting. For laying out tapers and dividing circles and laying 

 out geometrical figures, tables are furnished with the instru- 



ment, which give the settings that are necessary. In many 

 instances the protractor takes the place of the ordinary 

 45-degree and 60-degree triangles, and it is also used as an 

 extension to the T-square when the work is beyond the end of 

 the blade of the square. It is made by Darling, Brown, and 

 Sharpe, manufacturers of fine tools, of Providence, E.I. 



That Helps to Cure 



The Cold. 



The disagreeable 

 taste of the 



COD LIVER OIL 

 is dissipated in 



SG01TS 



MULSION 



i or Pure Cod Liver Oil ^vitii 



HYPOPHOSPHITES 



OSf LIlvIE .A.3M"I3 SOI3.A.. 

 The patient suffering from 

 CONSUMPTION, 



IBROTVCJJITIS, COlIfiH, COLB, OR 1 

 WASTING BISEASES, may take the 

 remedy with as much satisfaction as he 

 ■would take milk. Physicians are prescrib- 

 iug it everywhere. It is a pori'ect emulsion, 

 i and a wonderful flesh producer. Take no other 



A New Method of Treating Disease. 



HOSPITAL REMEDIES. 



What are they ? There is a new departure in 

 the treatment of disease. It consists in the 

 collection of the specifics used by noted special- 

 ists ofEurope and America, and bringing them 

 within the reach of all. For instance, the treat- 

 ment pursued by special physicians who treat 

 indigestion, stomacli and liver troubles only, 

 was obtained and prepared. The treatment of 

 other physicians celebrated for curing catarrh 

 was procured, and so on till these incomparable 

 cures now include disease of the lungs, kidneys, 

 female weakness, rheumatism and nervous de- 

 bility. 



This new method of "one remedy for one 

 disease " must appeal to the common sense of 

 all sufferers, many of whom have experienced 

 the ill effects, and thoroughly realize the ab- 

 surdity of the claims of Patent Medicines which 

 are guaranteed to cure every ill out of a single 

 bottle, and the use of which, as statistics prove. 

 /it7s ruined more stomachs than alcohol. A cir- 

 cular describing these new remedies is sent free 

 on receipt of stamp to pay postage by Hospital 

 Remedy Company, Toronto, Canada, sole pro- 

 prietors. 



CHANCE FOR ALL 



To Enjoy a Cup of Perfect 

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pounds of Fine Tea, either Oolong. Ja- 

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hratMl T,as, Coffees and EaUnK Powder. For fuU partiou- 

 l..i^i.ddie!-s ITB-E. &KEAT AlCESICAN TEA CO. 

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MINERALS. 



Cabinet Specimens and Collections. 



Our stock is very complete in fine specimens for 

 tlie connoisseurj as well as cheaper specimens for the 

 student and amateur. Complete Catalogue Free. 



GEO. li. ENGIilSH & CO., 



Dealers in Minerals, 



1513 Chestnut Street, Philadelphia, Pa. 



Old and Rare Books. 



Back numbers Atlantic, Century, Harper, 

 and Scribner, lo cents per copy, other maga- 

 zines equally low. Send for a catalogue, 



A. S. CLARK, 



Bookseller, 

 34 Park Row, New York City. 



JACK NUMBERS and 



I azines. Rates low. 



Schoharie, N.Y. 



