5月21日 星期一 遵义雨。晨22° ，校中19。5°

倭寇退出广西河池、金城江.Jet propelled planes ， Joan Tomkinson ， The Christian Science mo。nitor ， Feb.15，1945。

晨六点起。八点至湘江大戏园作纪念周。请缪彦威讲屈原，谓屈原为诗人 pu陀& simple，非政治家，亦非哲学家，其人厚于情感而薄于理智，故于北方之作风不同。余谓楚人固易冲动，而江浙人则往往重理智，在学校学生中可见一斑。

午后睡一小时。二点至校。叶左之来谈谢季华之子谢学锦事。李乔年（来），为要米。目前以贵阳有大军过境，米将大成问题。学生自治会代表吴寿椿及刘茂森来。瞩孙祥治觅马宗裕回校任事，因目前各方对于庶务处之种种作弊实不能不加以整顿。马在校多年，虽不能尽善但尚无大弊，若能驾驭得当，亦可用之材。晚晤黄尊生，嘱其约魏春孚为庶务主任。晤何清隐与曹礼奎，现清隐已与曹同居。据云洁隐收无线电，每日必须至晨三点，始可竣事云。

Jet propelled planes喷气式飞机.Ahhough a propulsive jet is produced by a gas turbine ， it is the tùrbine itself which is the real hero of the drama.This turbine-com。pressor unit will modify the aircraft structure。。.It is so。compact that machine using it will be almost perfectly streamlined ， with the engine located inside the fuselage or the wing.Calculat10n show that a flying wing with buried engines has113to112the total drag and airflow turbulence of the normal typé ， meaning less： horse power used to reach the same speed.The turbine can reach a continuous high speed jet sufficient to propel a plane at some 600miles per hour.Frank Whittle of英国 was the originator of the idea.Specimeris of gas turbine was sent to U.S.in1941.The first jet-propelled plane was flown in the U.S.， October ，1942.The jet engine works by burning gases hurled through the turbine to keep the compressor running ， and roarin：g out through the nozzle to provide thrust.Jet-propelled aircraft are now being manufacturéd in bulk.Its natural

habitat is in the stratosphere.It does not demand high octane fuels ， kerosene ， diesel or

tar oil can be used。

接 王宜佳、物理系同人、王淦昌、农艺系函

寄 黄海平、吕蔚光函谢家玉电