About 40 more subscribers only wanted for Part III, at 4s. 6d. After full list of 

 guarantors is obtained the price will be 6s. net. 



Lepidopterists who have uot j'et obtained 



Practical Hints-: Field Lepidopterist 



By J. W. TUTT, F.E.S., 



Pai'ts I and II, Price (5s. each. 



(Interleaved for collector's own notes). 



should do so without delay. Some '2r)00 hints culled from all the best field' 

 workers will tell collectors how to get almost all their desiderata themselves. 

 Dozens of lepidopterists have written to the avxthor stating that by means of 

 the hints contained in this work they have discovered many species of rare 

 lepidoptera in their own collecting-grounds, wdiich were quite unsuspected in 

 the neighbourhood before. 



It is further proposed to publish some time during the current year 



A THIRD (and LAST) PART of 



Practical Hints for the Field Lepidopterist, 



WITH A DETAILED 



Specific Index to Parts I, II and III 



(By H. J. TURNER, F.E.S.). 



This part will be about the same size as Part II. will be interleaved, will 

 contain detailed chapters on the Egg, Larval. Pupal, and Imaginal stages, as 

 well as about 1000 practical hints of the form now so well known to our field- 

 workers. Those who think these books are reprints of the small section of 

 hints that have appeared in the Magazine should see the books to discover their 

 mistake. It was because there was no room in the Magazine for a tenth of the 

 hints in hand that the books were published. 



Part III and the Index will shortly be put in hand. At present about 40 

 more guarantors are wanted at 4s. 6d. each. The part will be sold at 6s. net 

 after publication. 



Dear Sir, — 



Please enter my name as a guarantor foi' copies of Practical Hints 



for the Field Lepidopterist, Part III., and the Index to Parts I., II., and III., for each 

 copy of which I will send the sum of 4s. (5d. on publication. 



Name 



Address 



Date 



Mr. J. Herbert Tott, 119, Westcombe Hill, S.E. 



Melanism and Melanochroism in British Lepidoptera. 



(Demy 8vo., bound in Cloth. Price ol-.) 

 Deahs exhaustively with all the views brought forward by scientists to account for the 

 forms of melanism and melanochroism ; contains full data respecting the distribution of 

 melanie forms in Britain, and theories to account for their origin ; the special value of 

 "natural selection," "environment," "heredity," "disease," "temperature," (frc, in 

 particular cases. Lord Walsingham, in his Presidential address to the Fellows of the 

 Entomological Society of London, says, "An especially interesting line of enquiry as con- 

 nected with the u.se and value of colour in insects is that which has been followed up in 

 Mr. Tutt's series of papers on " Melanism and Melanochroism." 



J. Herbert Tutt, 119, Westcombe Hill, Blackheath, 8.F. . 



