SCIENTIFIC COMMITTEE, MARCH 31. 



XXXI 



4. P. bellatulum album (C) x P. callosum Sanderae (P) gives coloured hybrids (C P). 



5. P. bellatulum album (C) x P. Lawrenceanum Hyeanum (P) gives coloured hybrids 

 (C P). 



Table B. 



1. P. bellatulum album (C) x P. bellatulum album (C) should give albinos (C C). 



Mr. Eolfe's theory that the colour reversions are due to the fact that the 

 albinos crossed belong to diverse species fails to account for the cases in 

 sweet peas, stocks, and other plants where two albino individuals of the 

 same species, variety, and race may revert to coloured forms when 

 crossed. On the other hand, the conception of complementary colour 

 factors satisfactorily explains all the known phenomena of colour rever- 

 sions in plants and animals, so far as they have been critically and 

 experimentally studied." 



Psocideae injuring Plants, — Some time since Mr. Stanton Brown, 

 A.R.H.S., Breadsall, Derby, sent a number of insects from oleander, &c, 

 which were identified as Caecilius Bali an insect belonging to the 

 Psocideae, and known only to feed upon spores of fungi and similar 

 things. Mr. Brown now sent some pieces of recently struck cuttings of 

 Salvia splendens upon which the insects occurred in great numbers. 

 These cuttings were injured by insects, and Mr. Brown said that the 

 injury was solely due to the work of these insects, which did not appear 

 at all particular with regard to the plants upon which they feed. This 

 adds another to the already long list of insect pests in plant houses. Mr. 

 Saunders, F.L.S., took the plants for further examination, 



Larch with Gall-like Growths. — Mr. Elwes, F.R.S., showed a one- 

 year-old shoot of larch taken from a young tree in his nursery having 

 gall-like growths along several inches of its length. The shoot was 

 referred to Mr. Massee, V.M.H., who undertook to obtain some informa- 

 tion upon it if possible. 



Orchid Hybrids. — Mr. Rolfe, A.L.S., on behalf M. E. Cappe, Vesinet, 

 France, exhibited two very diverse hybrids raised from the same seed pod 

 of Laelio-Cattleya Gappei (a hybrid from L. cinnabarina x C. War- 

 scewiczii), the result of fertilising a flower with mixed pollen from 

 Laelia flava and Cattleya Mendelii. One flower appeared to be a true 

 hybrid between L.-G. Cappei and C. Mendelii, whose characters were well 

 blended, but the other closely resembled Laelia Cowani (a supposed 

 hybrid between L. flava and L. cinnabarina) in size. It was suggested 

 as a case of dissociation of the "mixed character" whereby an ovule of 

 L.-G. Cappei, from which the character of C. Warsceiviczii had been 

 eliminated, had been fertilised by a pollen tube from Laelia flava. 



Fruit of Euonymus japonicus. — Thomas Peed, Esq., High Cliff, 

 Ventnor, I.W., sent fruits of Euonymus japonicus. This plant not 

 uncommonly produces ripe fruits in this country, and Mr. Chittenden 

 said he had on one occasion found a seedling on the town rubbish heap 

 at Chelmsford. 



Scale Insect on Holly. — Mr. Saunders, F.L.S., reported that the 

 insect attacking holly from Ipswich was the very local scale insect, 

 Aspidiotus britannicus. He recommended that the holly hedge should 

 . be thoroughly sprayed with paraffin emulsion, taking care that both 



