M 

 I 



l^v 



i 



5 



W 



"_ r 



4k 



GEOLOGICAL 



t 



:? 



AND 



♦-,- 



MINERALOGICAL SPECIMENS. 



» \ 



4 ' 



J 



-> 



H 



v.- 



Dr. KRANTZj pf Bonn, on the Rhine, begs leave lo inform the scientific insti- 

 tutions and private collectors in this country, that he keeps constantly on hand the 

 largest stock of minerals, fossils and rock-sperimens, enabling him to make up 

 collections of every ext^ affrf^ complete existing ones. This establishment, 

 nunibering the first cabinets in all parts of the world, and the most distinguished 

 private cultivators of the mineralogical and geoloojcal sciences annong iis custom- 

 ers, has constantly, dyrirfg^, twenty years, kept pace with the rapid progress of 

 these branches of huntan knowledge; its travelers are constantly "en route" in 

 ail countries of Europe, and all etForts are made to secure the acquisition of every 

 thing new or interesting to collectors. * 



The list of minerals contains now about 800 species collected at more than 3000 

 localities, and forming a cabinet of lO.OOO first rate specimens, unrivalled by any 

 known private collection, and representing -the state of the science at the very'- 

 latest date with its most recent discoveries. Besides this standard coMeclion, oth- 

 ers of any desirable extent, and arranged in any prescribed system, can be fur- 

 nished at prices as the adjoined catalogue shows. ^ 



For Lecturers the instructive collections for the demonstration of the physical 

 properties of minerals, color, fracture, lustre, composition, etc. J etc., are particularly 

 useful. Scale of hardness, blowpipe minerals, etc. 



Cabinets for Ladies, in elegant mahogany cases with drawers, containing, in a 

 case not larger than two feet long by about one foot in depth and breadth, 30U small 

 but very ciiaracteristic specimens, (price $25; smaller ones to order.) 

 Cabintts for Children in fine paste-board cases, at from $2-6. 

 Mineral s for Chemists, Tor the preparation of rare chemical substances and the 

 exercise of students in analyzing them, such as Uranium, Wolfram, TeMurium, 

 Titanium, Mellite, etc., at the lowest prices. All specimens are provided with 

 printed labels, in English, German and French- 

 Orders for minerals and rock-specimens sho/ild always mention the size desired. 

 Fossils. — The number of species of fussil organic reniairis^ amounts to about 

 8000, collected in alJ the principal localizies of Europe and the United Stales. 

 All these species are carefully determined as far as the present slate of the science 

 permits, and collections for the illustration of all treatises on geology, including 

 the characteristic shells of all formatliins, ran be furnished to any extent within 

 the above number. Each specimen is furnished with a printed label indicalin 

 the locality, geological formation, and name ; the collections are generally arrange 

 according to the relative age of the formations; for special purposes zoological 

 classifications are adopted if asked for. ^ 



A separate part of the catalogue contains prices of casts of rare and interesting 

 fossils of larger size, painted in the colors of the original and forming a valoable 

 complement Tor public cabinets. ' 



The attention of scientific men is particularly called to Mr. K.'s collection of 

 Saurians rrom the Lias of Worieniberg. surpassing in some pieces for beauty and 

 completeness, those of the first Museums of Europe, 



Ichthyosauri at from $30-200. Loligo, fishes and Crinoidea of the same and 

 other formations at equally moderate prices. 



Rocks — About one thousand varieties of rock-specimens are on hand,coastilutlng 

 a complete series of all the primary and sedimentary rocks which form the known 

 solid part of our globe. All ihe specimens of each collection are c>f the same size 

 and sliape, so as to admit of being arranged in an elegant manner, without un- 

 necessary waste of room in drawers or cases. 



A fevv geoarraphical collections of countries interesting to geologists, such as 

 Saxony, the Uartz, Mt. Vesuvius, the Alps, Italy^ Hungary, Norway and Sweden, 

 Mexico, and some others are still on hand. 



; "^ 



-1 



4M 



