crs 



PREFACE 



Garden 



These pages contain a : :::;:' .■.•;■ ;:i :: :':.-: : ".y-i . ry ii:r- 

 t: -'^[y, and physics : r.r: :.; :: :i ::_ :. n :: L;:_y " - -. i 

 also a record of some observations upon the discharrr : ~ 



o: A- : etes and of Pilobolas. MatnraUy many T)r - - 

 bt-i- 1 :: r-jlved. 1; :: I :re that the new lI,: i. ..ii-t ; i-^ 

 give an ^aaca unities: i^ i^-i^c of onr commonest plants. The 

 delicate adaptations of strocture to fonciion^ as revealed by a 

 study of the firdt-body of a Mushroom, a Coprinus comatu^. or 

 a P'yrorus, have provided me with no small cause for wonder- 

 : . :^: and delight, and tliT v^m well worthy of the attention 

 of all those who do-ir : ; . -:and more fully the ver : -r 

 world by which .:. .: ; ::: ij. 1 i. Tne value of the ii;:e 

 purely physical work must be left to physicists to decide. How- 

 ever, as showinsT how closely the various branches of science may 

 be knit toeetlir:. i: is no: ^iliout interest that the rirs: direct 

 test of Stok s La for liie laii of microscopic spk :r - in :ur has 

 been carried out with the help of a lowly Cryx: _ .m. 



Tl: search, which has occupied five years, was pre: iri n : 

 si:__ : i by a systematic study of fung".:s srv^ies in tt. r' i . in 

 wlii h I was much assisted by Geo. Mu-- - tidi Futic::.-s i^ i 

 aii'-l M. C. 1/ - i:e's Illustration- y i- .' -' Fwi^. I'':..i-_ ; ..r 

 win: IS :hr x^iLntal work was carri. i n :n my own laborat: rj 

 at the University of Manitoba^ and during the summers in the 

 Pliysi 5 : n d Botanical laboratories at the University of Birm'nj- 

 h;mi. I have much pleasure in expressing my I??: : :: n£:s to 

 F: i " :- Povntioff ;:nii Hiii'; - tor the facilities .. : ' me. 



I also wish to acknowi :_  :debtedness to !Dr. Guy £arlow 



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