78 J. SAUNDERS — witches' BROOMS. 



My best thanks are due to Dr. W. G. Smith for his valuable 

 assistance in tracing theliteratureof the subject ; to Mrs. Arthur 

 Staddon and to Mr. Norwood for their kindness in photographing 

 some of the more instructive examples ; and to Mr. W. H. 

 Burrell for the preparation of micro-slides. 



Explanation of the Plates. 



PLATE IV. 



Broom on Crfim or Wild Cherry {Pnoiu.s Avium, L.). Mark3-ate, Herts. 

 Photographod by Mrs. A. Staddon. 



PLATE V. 



Broom on Birch [Hefida alba, L.). By canal hetwi^en Grove Park and Lady 

 Capell's Wharf, Watford. Photographed by John Ilopkinsou, April, 1906. 



PLATE VL 



TJppEH PART. — Spruce Fir {Abies exceha, De C). Luton IIoo Park. The 

 top figure represents a dead broom ; the left-hand figure, a normal branch of 

 three years' growth, showing the foliage of each year ; the right-hand figure, 

 broom" showing defoliation of previous year's leaves. Photographed by W. J. 

 Roberts. 



Lower part. — Pendent broom on Hornbeam {Cuypiinis lictn/iis, L.). Chaul 

 End, Luton. The original is iu the British Museum. 



Trans. Hertforhhire Xat. Hist. Soc, Vol. XIIT, Fcnt 1, February, 1907. 



