The American Journal of Science and ArtsS. Converse, 1888 |
Dentro del libro
Resultados 1-4 de 4
Página 344
... pinnules and in its nervation , which is partly radiate . Better specimens than any yet obtained are needed before a complete description of it can be written , or its generic rela- tions be accurately determined . Some of the pinnules ...
... pinnules and in its nervation , which is partly radiate . Better specimens than any yet obtained are needed before a complete description of it can be written , or its generic rela- tions be accurately determined . Some of the pinnules ...
Página 346
... pinnules and the bases of two others . Its general characters are well shown in the figure . So far as known this is the first instance of the discovery of a cycad with denticulated pinnules in American Mesozoic rocks , and among ...
... pinnules and the bases of two others . Its general characters are well shown in the figure . So far as known this is the first instance of the discovery of a cycad with denticulated pinnules in American Mesozoic rocks , and among ...
Página 348
... pinnules . Among the fossil plants brought from San Juancito by Mr. Leggett are a number of narrow fronds with subquadrate pin- nules which evidently represent the group of cycads which runs through the Mesozoic rocks of Europe ...
... pinnules . Among the fossil plants brought from San Juancito by Mr. Leggett are a number of narrow fronds with subquadrate pin- nules which evidently represent the group of cycads which runs through the Mesozoic rocks of Europe ...
Página 349
... pinnules were attached by the entire base , are an inch in width by two and a half inches in length , the summit is obliquely rounded , the nervation fine , parallel and simple , sometimes dotted as shown in Schenk's figure . A nearly ...
... pinnules were attached by the entire base , are an inch in width by two and a half inches in length , the summit is obliquely rounded , the nervation fine , parallel and simple , sometimes dotted as shown in Schenk's figure . A nearly ...
Contenido
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 | |
Otras ediciones - Ver todas
Términos y frases comunes
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