It is generally accepted that there exists a definite balance between the intake and output of water so that the water content of the body is maintained within narrow limits at a constant level. Data relative to the distribution of water in the organisms of different species have been collected by Skelton"1. He has shown that the total percentage of water in the body is as follows: man, 63; rat...

I have followed the lysosome field since it was proposed as a concept by deDuve and his co-workers in 1955 and find this collection of papers by workers in that field an interesting addition that has many sparkling con-addition, of course, to deDuve, to name a few) but it also has several several shortcomings. For the uninitiated (and there are surprisingly many for whom "lysosome" is a new wor...