272 The Structure of Protoplasm 



Speaking seriously, though, molecular biology has progressed an 

 amazing lot these last few years, and I am happy that I have been 

 privileged to take part in it. 



"We all in this laboratory send our kindest regards and good 

 wishes to you and your associates. 



Yours very sincerely, 



(Signed) W. T. Astbury. 



