April 19, 1889.] 



SCIENCE. 



GUARANTY INYESTMENT COMPANY 



CAPITAL $250,000. 



Hon. ALBERT H. HORTON (Chief Justice, Kansas Sopreme Court), Topeka, Kan., Pres't. 



7°|o Guaranteed Farm Mortgages 7 



The Company calls the special attention of Investors to the following points : 



I. All loans guaranteed and interest payable semi-annually at the Importers' & Traders' National Bank, New 

 York. 



II. Unusual fulness of information, not only about the security itself, but about the general development of the 

 section where the farm is located. 



III. An examination each year of the general business of the Company and the Mortgages themselves by a COM- 

 MITTEE OF INVESTORS sent for the purpose. 



IV. Many hundred Mortgages taken and NOT A SINGLE FORECLOSURE. 



V. Exhibitions in New York at frequent intervals, of Kansas and Nebraska Farm Products. The Exhibition at 

 the American Institute in the fall of 1888, received the HIGHEST A WARD of superiority. 



VI. Monthly Bulletins giving full information about all Mortgages offered ioi sale. 



Address for Monthly Bulletin and Investors' Committee Heportfor 18H8, 



HENRY A. RILEY, General Eastern Manager, 191 Broa dway, N.Y. 



Ives Strata Map of part of the United States of America and Canada, 



In wliicli llie Arcliilecture of the Earth's Crust is Oraphically Exhibited, Illustrating Fuiidaniental Faets 

 alilie of 



STRUCTURAL GEOLOGY AND PHYSICAL GEOGRAPHY. 



The Strata Map is a device for the more efQcient teaching of Physical Ge- 

 ography acd Elemeutary Geology in Schools. It consists of a series of Ten 

 Superimposed Maps, of difkekent coi.oks, representing the several geological 

 formations of Ihe district, enclosed in a glazed frame, the whole hinged to ad- 



mit of examination in detail. By its means superposition, dermdation, and 

 outcrop of strata are graphically exhibited, with the phenomena of escarp- 

 fuents, outliers, inliers, dip, strike, conformability, &c., and the Cards may 

 be bent to show synclinal or anticlinal folds. 



OPINIONS OF EMINENT OEOEOG-ISTS. 



Yale University. 



" Well fltted for the use of Instruction i 



Professor Jaities D. Dana, 

 the science." 



Professor Addison E. Virrill. 

 " It will be of very great advantage in the teaching of geology." 

 Harvard University. Professor N. S. Shaler. 



" An extremely useful adjunct to our means of illustration." 

 Johns Hopkins University. President D. C. Gilman. 



'' Wherever American geology is taught your map should be a part 

 of the apparatus." 

 Pennsylvania University. Professor Geo. A. Koenig, 



" The map will be of special use in schools, which can only de- 

 vote a short time to the study of Geology.'' 

 Michigan University. Professor Alexander Winchell, 



" It seems to me that the device will commend the study of Geol- 

 ogy to many persons who might otherwise regard the subject as dif- 

 ficult and uninviting. The work prepared by Mr. Ives ought to be used 

 extensively in American fcchools." 

 Cornell University. Professor H, Shaler Williams. 



" A valuable aid to teachers of geology as a means of graphically 

 representing the grand facts of stratigraphy in the Eastern United 

 States." 



Columbia College, New York, Professor J. S. Newberry. 



" A valuable aid in teaching geologv, giving as it does to the stu- 

 dent a clear idea of the superposition of the different geological sys- 

 tems at a glance." 

 Darimouth College, Hanover, N. H. Professor C. H. Hitchcock. 



"Am sailsfled that Its use will greatly assist students to understand 

 the geological structure of the country." 



SIZE 30x24 INCHES. PRICE S17.S0. 



Acadettiy of Natural Sciences of Philadelphia. Professor Angelo Heilprin 



" The representation of Strata, as imposed one upon the other, by 

 means of cardboard is certainly a good plan, for apart from rendering 

 more intelligible the general expressions of the Map, it permits of 

 ready alteration and the possibility of constantly bringing the map up 

 to date, in other words to make it conform to more recent discoveries." 

 Boston Society of Natural History- Professor Aipheus Hyatt. 



" Your map representing superposition and the various phenom- 

 ena of geological science, so far as the distribution of rocks on this 

 continent is concerned, has greatly interested me. I think that In the 

 hands of a good teacher it would prove an efficient and useful adjunct 

 in the teaching of geology." 

 American Museum of Natural History. Professor R. P. Whitfield. 



" In the direction of a want long felt by Teachers of Geology a.id 

 will undoubtedly be appreciated by them as well as by the student." 

 U. S. Geological Survey. ' Major J. W. Powell, Director 



" After examination I am able to state that the work has been ex- 

 ecuted with care and fidelity, and I believe it will be a valuable aid to 

 teachers." 

 New York State Survey, Professor James Hall, State Geologist 



" I believe that maps constructed upon this method would be ex- 

 tremely useful in the hands of competent teachers." 

 Pennsylvania Survey. Professor J. P. tesley, Slate Geologist. 



"A piece of rew and useful apparatus for teaching Geology, by 

 representing to the eye of the student the areas of superimposed for- 

 mations. I cordially recommend it to teachers and students." 

 New Jersey Survey. Professor Geo. H. Cook, State Geologist, 



" It is very neatly done and must prove a great help to intelligeni 

 teaching and studying of Geological Science." 



PUBLISHED AT THE OFFICE OF "SCIENCE," 47 LAFAYETTE PLACE, NEW YORK, N. Y. 



