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On the force of effective molecular action 有效分子作用的力
American Journal of Science and Arts Pub Date : 1879-05-01 DOI: 10.2475/ajs.s3-17.101.346
W. A. Norton
{"title":"On the force of effective molecular action","authors":"W. A. Norton","doi":"10.2475/ajs.s3-17.101.346","DOIUrl":"https://doi.org/10.2475/ajs.s3-17.101.346","url":null,"abstract":"in which x denotes the distance between the electric envelopes of the contiguous molecules; r the distance between the center of emanation of the attractive force, f, represented by the first term, and that of the repulsion f', represented by the second term; n the coefficient of the attractionf, and m that of the repulsionf'. The expression has been simplified by making one or two assumptions that do not strictly accord with fact, but which can occasion no material error in the general discussion now proposed; as will be shown on another occasion.","PeriodicalId":7651,"journal":{"name":"American Journal of Science and Arts","volume":"8 1","pages":"346 - 358"},"PeriodicalIF":0.0,"publicationDate":"1879-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88394272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The relations of the volumes of solutions of hydrated salts to their water of composition 水合盐溶液的体积与其组成水的关系
American Journal of Science and Arts Pub Date : 1879-05-01 DOI: 10.2475/AJS.S3-17.101.399
R. J. Southworth
{"title":"The relations of the volumes of solutions of hydrated salts to their water of composition","authors":"R. J. Southworth","doi":"10.2475/AJS.S3-17.101.399","DOIUrl":"https://doi.org/10.2475/AJS.S3-17.101.399","url":null,"abstract":"","PeriodicalId":7651,"journal":{"name":"American Journal of Science and Arts","volume":"5 1","pages":"399 - 401"},"PeriodicalIF":0.0,"publicationDate":"1879-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86251235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experiments in cross-breeding plants of the same variety 同一品种的杂交育种试验
American Journal of Science and Arts Pub Date : 1879-05-01 DOI: 10.2475/ajs.s3-17.101.343
W. J. Beal
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引用次数: 0
Observations on the planet discovered March 21st 对这颗行星的观测发现于3月21日
American Journal of Science and Arts Pub Date : 1879-05-01 DOI: 10.2475/AJS.S3-17.101.393-A
C. Peters
{"title":"Observations on the planet discovered March 21st","authors":"C. Peters","doi":"10.2475/AJS.S3-17.101.393-A","DOIUrl":"https://doi.org/10.2475/AJS.S3-17.101.393-A","url":null,"abstract":"","PeriodicalId":7651,"journal":{"name":"American Journal of Science and Arts","volume":"31 1","pages":"393"},"PeriodicalIF":0.0,"publicationDate":"1879-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88034701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of the tetrahedrite from Huallanca, Peru 秘鲁瓦兰卡地区四面体石的分析
American Journal of Science and Arts Pub Date : 1879-05-01 DOI: 10.2475/ajs.s3-17.101.401
W. Comstock
{"title":"Analysis of the tetrahedrite from Huallanca, Peru","authors":"W. Comstock","doi":"10.2475/ajs.s3-17.101.401","DOIUrl":"https://doi.org/10.2475/ajs.s3-17.101.401","url":null,"abstract":"IN this Journal for April, 1878, there is given a short extract from an article in the London Mining Journal by Mr. Henr.Y Sewell, F.RG.S., describing the mineral caves of Huallanca, Peru. Mr. Sewell states that these silver·producing caves are situated upon the eastern flank of the Peruvian Andes at an altitude of 14,700 feet above the sea, and 4000 feet above the town of Huallanca. The mass of the argentiferous ores consists of the mineral tetrahedrite; these ores contain about 800 ounces of silver to the ton. The mineral is in :fJart obtained from huge cavities, some of them twenty-five or thirty feet long, and as much deep. Mr. Sewell describes the crystals as occurring in such abundance on the walls of these caves, that \"millions\" of them are destroyed b.y the picks of the miners. Some specimens from this locality were presented to the Yale College Museum by Mr. Sewell; the crystals are large and brilliant and in one case have a length of about two inches. They have the usual characteristic tetrahedral form. I have analyzed a portion of one of the crystals, and have obtained the following results: Specific gravity =4'7.","PeriodicalId":7651,"journal":{"name":"American Journal of Science and Arts","volume":"93 5 1","pages":"401 - 402"},"PeriodicalIF":0.0,"publicationDate":"1879-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87662696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On a method of estimating the thickness of Young's reversing layer 一种估计杨氏反转层厚度的方法
American Journal of Science and Arts Pub Date : 1879-04-01 DOI: 10.2475/AJS.S3-17.100.303
W. H. Pulsifer
{"title":"On a method of estimating the thickness of Young's reversing layer","authors":"W. H. Pulsifer","doi":"10.2475/AJS.S3-17.100.303","DOIUrl":"https://doi.org/10.2475/AJS.S3-17.100.303","url":null,"abstract":"","PeriodicalId":7651,"journal":{"name":"American Journal of Science and Arts","volume":"39 1","pages":"303"},"PeriodicalIF":0.0,"publicationDate":"1879-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81482731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Notice of recent additions to the marine fauna of the eastern coast of North America 北美东海岸最近增加的海洋动物群的通知
American Journal of Science and Arts Pub Date : 1879-04-01 DOI: 10.2475/ajs.s3-17.100.309
A. E. Verrill
{"title":"Notice of recent additions to the marine fauna of the eastern coast of North America","authors":"A. E. Verrill","doi":"10.2475/ajs.s3-17.100.309","DOIUrl":"https://doi.org/10.2475/ajs.s3-17.100.309","url":null,"abstract":"IN the fonowing notice there will be found descriptions of new species of Hydroids, belonging to the Plumularidce, referred to in the preceding number, but from which they were omitted, for lack of space. These and other species herein named, as well as those described in the last n urn ber, fm'm part of the extensive collections of marine Invertebrata, belonging to the U. S. Commission of Fish and Fisheries, which have been entrusted to me for examination and desCl'iption, by the Commissioner, Professor S. F. Baird. In the present notice, there are also included certain species which were collected during several special dredging expeditions, undertaken by the author, with Professor S. 1. Smith and others, in 1864, 1865, 1868, 1870, previous to the organization of the Fish Commission,","PeriodicalId":7651,"journal":{"name":"American Journal of Science and Arts","volume":"9 1","pages":"309 - 315"},"PeriodicalIF":0.0,"publicationDate":"1879-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88586702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Double stars discovered by Mr. Alvan G. Clark 阿尔文·g·克拉克先生发现的双星
American Journal of Science and Arts Pub Date : 1879-04-01 DOI: 10.2475/AJS.S3-17.100.283
S. W. Burnham
{"title":"Double stars discovered by Mr. Alvan G. Clark","authors":"S. W. Burnham","doi":"10.2475/AJS.S3-17.100.283","DOIUrl":"https://doi.org/10.2475/AJS.S3-17.100.283","url":null,"abstract":"","PeriodicalId":7651,"journal":{"name":"American Journal of Science and Arts","volume":"23 1","pages":"283 - 289"},"PeriodicalIF":0.0,"publicationDate":"1879-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89810716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Dr. Jacob Bigelow 雅各布·毕格罗博士
American Journal of Science and Arts Pub Date : 1879-04-01 DOI: 10.2475/ajs.s3-17.100.263
Anonymous
{"title":"Dr. Jacob Bigelow","authors":"Anonymous","doi":"10.2475/ajs.s3-17.100.263","DOIUrl":"https://doi.org/10.2475/ajs.s3-17.100.263","url":null,"abstract":"","PeriodicalId":7651,"journal":{"name":"American Journal of Science and Arts","volume":"346 1","pages":"263 - 266"},"PeriodicalIF":0.0,"publicationDate":"1879-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76405246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Notice of Gaston de Saporta's work; the plants of the world before the advent of man 加斯顿·德·萨波尔塔作品简介;人类出现之前世界上的植物
American Journal of Science and Arts Pub Date : 1879-04-01 DOI: 10.2475/ajs.s3-17.100.270
L. Lesquereux
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引用次数: 0
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