The American Journal of Science and ArtsS. Converse, 1888 - Geology |
From inside the book
Results 1-5 of 38
Page 39
... steel from such an edge or point than from a hollow . This follows whether the tearing away is done mechanically or chemically . Hence the points and edges of a magnetic pole , either of a permanent or induced magnet , are protected ...
... steel from such an edge or point than from a hollow . This follows whether the tearing away is done mechanically or chemically . Hence the points and edges of a magnetic pole , either of a permanent or induced magnet , are protected ...
Page 40
... steel wire about 1mm in diameter and 10mm long were imbedded side by side in insulating material , and each was attached to an insulated wire . One of them was filed to a sharp point , which was exposed by cutting away a little of the ...
... steel wire about 1mm in diameter and 10mm long were imbedded side by side in insulating material , and each was attached to an insulated wire . One of them was filed to a sharp point , which was exposed by cutting away a little of the ...
Page 41
... steel and showed near the ends curious corrugations , the metal being left here and there in sharp ridges and points . In one case the cylinder was eaten away on sides and ends so that a ridge of almost knife - like sharpness was left ...
... steel and showed near the ends curious corrugations , the metal being left here and there in sharp ridges and points . In one case the cylinder was eaten away on sides and ends so that a ridge of almost knife - like sharpness was left ...
Page 45
... steel bars experimented on , whenever the acid reached a spot slightly harder than the surrounding portions it produced a little elevation from which the lines of force di- verged , and still further shielding it produced a ridge or ...
... steel bars experimented on , whenever the acid reached a spot slightly harder than the surrounding portions it produced a little elevation from which the lines of force di- verged , and still further shielding it produced a ridge or ...
Page 115
... steel - gray , brassy and bronze - yellow color , presumably native iron and pyrrhotite . The striking feature of the stone is its fine and compact tex- ture , which exceeds that of any chondritic meteorite with which we are acquainted ...
... steel - gray , brassy and bronze - yellow color , presumably native iron and pyrrhotite . The striking feature of the stone is its fine and compact tex- ture , which exceeds that of any chondritic meteorite with which we are acquainted ...
Contents
1 | |
14 | |
33 | |
39 | |
48 | |
52 | |
59 | |
73 | |
269 | |
277 | |
286 | |
303 | |
305 | |
317 | |
332 | |
342 | |
81 | |
113 | |
119 | |
131 | |
146 | |
158 | |
162 | |
167 | |
175 | |
208 | |
222 | |
226 | |
239 | |
247 | |
254 | |
351 | |
359 | |
380 | |
392 | |
397 | |
410 | |
427 | |
443 | |
450 | |
458 | |
465 | |
468 | |
472 | |
479 | |
Other editions - View all
Common terms and phrases
absorption Acad acid action albite alloys American amount analysis angle appears atoms augite biotite bolometer Botanical Notices Botany carbon cent character chemical Coan color cone crater crinoids crystals curve cycads deposits described determined diameter effect electrical Emmons eruption experiments fact fauna feet feldspar figure fissures Flora Flora Brasiliensis formation fossils Genera genus Geological gneiss heat Hilo Hooker hornblende hydrochloric acid iron Journ Journal Kilauea lava less light limestone magnetite mass measured metal mica miles mineral molecules mountain nearly North observed obtained occur paper pinnules plants plates platinum present prism Proc Prof Professor Puget quartz ratio region Report rocks schist sillimanite Silurian slates slit soil solar solution species specific rotation specimens spectrum staurolite steel stream summit surface Survey Taconic temperature thickness tion vapors viscous wave-lengths xenotime zircon