259 
NOTES ON THE BIOLOGY OF PEDICULUS 
HU MAN US. 
By E. kindle, Ph.D. 
Assistant to the Qtiick Professor of Biology. 
With a Foreword by GEO. H. F. NUTTALL, F.R.S. 
{From the Quick Laboratory, University of Cambridge.) 
Foreword. 
During the two years preceding the outbreak of war, Dr Kindle 
was engaged in researches on the biology of lice. Soon after the war 
began he joined the army, leaving his notes with me. Ke has now been, 
in France for over a year and is serving as Captain in the Royal Engineers. 
An abstract of his work has been set up in type for many months for 
publication by the Local Government Board but his contribution has 
been withheld unavoidably through a desire that it should be supple¬ 
mented by further work which has since been conducted in the Quick 
Laboratory. 
In view of Mr Bacot’s interesting results described in the foregoing 
paper, it seems advisable to publish some of Dr Kindle’s ms. notes 
which deal with problems not possessing medical interest, viz. the 
occurrence of d and ? broods and a reference to an extended series 
of experiments he made upon the inheritance of melanism in Pediculus 
humanus, subjects referred to by Mr Bacot on p. 256 (see also his foot¬ 
note). As Dr Kindle states, his results are inconclusive, but they are 
decidedly of interest, and, as he was the first in the field, credit should 
be given to him for what he has done. Ke hopes in the future to 
continue his investigations. 
For several years we have raised P. humanus without diflftculty 
by feeding them twice daily upon the human subject and keeping theitf. 
