Professor Grabau was one of the most eminent American palaeontologists and geologists of this century. The biographical note of him was written by late V. K. T
由河流冲积而成之砂金矿,前人悉以砂金层与河面比较之高度,而分梯级及河床砂砾矿床二种,按砂金矿之生成,类皆与地形有密切之关系,在不同之地形内所停积之砂金矿,其产
Gold
,.众吞垂纶乐吟陶, 、,.,冬见鱼儿上树梢。、- 二一戏问‘“高手吮;是哪个汾足: ‘.苦杯红脸‘J谙树笑香腻犷’‘; 翻;卜协__几鱼上树@冉守训!河南中牟请下载后查看，本文暂不
将一个恒温外套量热计改装成溶液的凝固点测定仪,以此分别测定了苯～对二甲苯和苯～环巳烷二元稀溶液的活度系数,对装置的准确度进行了检验,以同一仅器测定了苯～二甲基甲酰胺、苯～
都说邮票是国家的名片,那么应该说旗票是烫金的名片了。因为它把主人的名字——尊严的国旗连同铭记一起精致地印在了名片上。难怪它受到了众多旗票爱好者的青睐。一般集地名
天津范先生来信说:他和钓友们在谈论鱼和水的时候,有的人说鱼喜欢清水,而且清水养出的鱼也最好吃。可也有人说:水至清则无鱼, 看看那些养鱼的池塘,哪一个是清水。我们纠缠在
Students of Geology are today confronted with the necessity of anew attitude, which they have to take towards a number of fundamentalgeological concepts which
I. GEOLOGY AND TOPOGRAPHY OF THE CORUNDUM DISTRTOT. The corundum is found in Ping Shan Hsien (平山縣) which is located in the south-western part of Chihli. It
1民生大部分中国人不敢多花钱当你认为中国人大把消费的时候,他们却通过存钱来弥补安全感的匮乏。按理,中国人应该到购物中心去,沉迷于消费乐趣,并推迟存款。因为中国人正生
In the province of Anhui along the Yangtze River, especially on the south of it there occur many iron deposits. They have been described in “The Iron ore depo