CONTRIBUTIONS FROM THE WISLEY LABORATORY. 371 



Nec Plus Meuris 



Dr. Jules Guyot 

 14*2 Beurre Bosc 

 14-3 Beurre de Mortillet 



Marie Louise 

 147 Gilogil 



14- 8 Passe Colmar 



15 General Todleben 



15- 6 Jean de Witte 



Nouveau Poiteau 

 157 Glou Morceau 

 15*8 Doyenne du Cornice 



Michaelmas Nelis 



16 Pitmaston Duchess 

 167 Napoleon 



12 '2 Hacon's Incomparable 

 Huyshe's Prince Consort 

 Josephine de Malines 

 President d 'Osmond ville 



12 3 William's Bon Chretien 



12-5 Belle Julie 



Huyshe's Victoria 



12- 8 St. Edmund 

 13 3 Beacon 



13 6 Hessle 



13- 8 Gansel's Bergamot 



13-9 Beurre Capiaumont 

 Beurre Sterckmans 



14 Gregoire Bordillon 



There appear to be very few lists existing giving averages of order 

 of flowering over several years. Mr. C. H. Hooper has kindly placed 

 at my disposal some lists he collected from various sources, but they 

 unfortunately relate to one year only as a rule. Some appear to give 

 dates of opening of the first flower, some of full flower, and some of 

 a few days after opening of first flower. These and other differences 

 make the lists difficult to compare with one another profitably. There 

 is a general similarity in the lists though in one or two instances 

 there are marked differences from the Wisley order. These differences 

 are probably to be accounted for partly for the reasons given above 

 and partly because there are minor variations from the usual order 

 of flowering every year. 



It is interesting to note that in a list from Victoria, Australia,* 

 ' Winter Nelis,' * Souvenir du Congres/ and ' Uvedale's St. Germain ' 

 are named as mid-season flowering varieties, ' Beurre Berckmans ' 

 (possibly a misprint for 1 Beurre Sterckmans ') a little later, and 

 ' Beurre Bosc ' and 1 Williams' Bon Chretien ' among the late ones, 

 the other varieties named in Mr. Wallis' list not appearing in ours. 

 These seem to indicate that pear varieties, like apples, maintain their 

 relative times of flowering even at the Antipodes. Mr. Hooper's own 

 observations made at Wye, Kent, give the order for full flowering, from 

 an average of three years, 1 908-1 910, as follows : ' Duchesse d'Angou- 

 leme,' 'Beurre Clairgeau,' 'Beurre Diel,' 'Marguerite Marillat,' 

 'Williams' Bon Chretien,' 'Doyenne Boussoch,' 'Beurre Giffard,' 

 'Dr. Jules Guyot,' ' Clapp's Favourite,' 'Beurre Hardy,' ' Triomphe 

 de Vienne,' 'Souvenir du Congres,' 'Jargonelle,' ' Catillac,' 'Marie 

 Louise d'Uccle,' ' Durondeau,' ' Pitmaston Duchess,' ' Doyenne du 

 Cornice.' The most important differences between this list and the 

 Wisley one are the early position of ' Williams' Bon Chretien * and 

 the late position of ' Durondeau.' It is possible that " full flower " 



♦Wallis, E., "Sterility in Fruit Trees." {Jour. Dep. Agr. Victoria'™. (1911), 

 pp. 18, 19). 



