58 



received from Mr. G. B. Pearson in Pasadena, California, and at 

 the same time exhibited a small specimen of Echinocactns 

 nidizeni obtained by Mr. Pearson in the Colorado Desert. 



" I have paid, thanks to my friends, several visits to the deserts, 

 both the Mohave, 130 miles away north and to Palm Springs, 

 Colorado, 108 miles south. There I have seen Cereiis i/iuauteiis the 

 'giant' cactus 50ft. tall and have not seen one small one. This is 

 the cactus with great stumpy limbs covered with spines and 

 branching out at all angles with great ' bushy-shaped ' shoots that 

 give such a weird appearance. In one district near Rosamond, we 

 passed through thousands of them scattered all over the desert. 

 There is another which the author of Desert Trails calls the ' vilest 

 of the vile.' I have verified that remark, time and again, by 

 rushing into them when one's eye is glued while pursuing a ' fly ', 

 and it has taken time and patience to dig out the tish-hook like 

 thorns that have penetrated even my boots sometimes, let alone got 

 through my leggings. The ' barrel ' cactus of which I send a 

 photo stands 5 to 6 ft. high." 



NOVEMBER lOth, 1921. 



The Rev. R. E. E. Frampton, M.A., Halstead Rectory, 

 Sevenoaks, Kent, and Dr. H. D. Smart, Shelley, Huddersfield, were 

 elected members. 



Mr. Laurence Chubb, of the " Commons and Footpaths 

 Preservation Society," gave a lecture on the work of the Society 

 illustrating it with a large number of lantern slides. [See page 7.] 



NOVEMBER 2ith, 1921. 



The Annual Exhtbition. 



Prof. Poulton exhibited a set of Pa/iilio dardanns, Brown, from 

 the high Kikuyu Escarpment (6,500-9,000 ft.) near Nairobi, and 

 from Nairobi itself (5,500 ft.), and explained the results obtained by 

 submission to ultra-violet light, by Dr. Cockayne's method. The 

 pale yellow of the males fluoresced with wonderful brilliancy, but 

 no pigment of the fully developed mimetic females was fluorescent. 

 The localities mentioned above are, however, very rich in primitive 

 forms of female, intermediate between the male and the completed 

 mimic, and these gave the following results : — 



