330 



Paillot (A.). Influence de la Temperature sur le M^eanisme de 

 I'Immunite humorale chez les Insectes. — C. R. Soc. Biol., 

 Paris, Ixxxiv, no. 14, 23rd April 1921, pp. 737-739. 



The results of experiments to ascertain the effect of temperature on 

 the mechanism of the reactions of humoral immunity in insects are 

 described. The modifications resulting from a prolonged low tempera- 

 ture are more easily accounted for if the humoral transformations are 

 admitted to be the result of colloidal reactions between the micro- 

 organisms and certain constituents of the blood than if they are 

 considered to be caused by antibodies or diastasis [R.A.E., A, ix, 

 234]. The colloidal equilibrium of the blood of caterpillars in a state of 

 immunity is different from that of normal individuals. 



Cutler (D. W.). Observations on the Protozoa parasitic in the Hind 

 Gut of Archotermopsis larougJiioni, Desn. 1. Ditricliomonas 

 {Trichomonas) tcrmitis, Imms. 2. Joenopsis polytricha, n. gen.,, 

 n. sp., with brief notes on two new species, Joenopsis 



cephalotricha and Microjoenia axostylis. 3. Pseudotrichonympha 

 pristina. — Qrtlv. Jl. Microscop. Sci., London, N. S. nos. 252, 255- 

 and 258, April" 191 9, March 1920, and March 1921, pp. 555-588, 

 383-410 and 247-264, 8 plates, 11 figs. 



The contents of these papers are indicated by their titles. 



Order made by the Governor-in-Executive Committee under Sections 

 45 and 46 of the Trade Act 1910 (1910-16), Barbados.— il/S. 



from Colonial Office, 30th April 1921. 



This order, dated 2nd September 1920, prohibits the importation 

 into Barbados of cotton seed or cotton lint except when accompanied 

 by a permit from the Director of Agriculture and a certificate stating 

 that the permit is in order and listing all insect or fungous pests of 

 cotton known to exist in the locality to which the permit relates. The 

 method of obtaining such a permit is described, the particulars required 

 being the name and address of both exporter and importer, and the 

 country or locality where the seed or lint was grown. Before being 

 landed, any cotton seed or cotton lint must be subject to fumigation 

 or other treatment required by the Director of Agriculture. Goods 

 of any other description shipped in the same vessel as cotton seed 

 may also be required to be fumigated, and may not be landed without 

 the consent of tlie Director of .Agriculture. 



Departmental Activities : Entomology. — //. Dcpt. Agric, Union 

 S. Africa, Pretoria, ii, no. 4, April 1921, pp. 301-306. 



The Coreid bug, Holopterna valga (tipwilter), is very troublesome in 

 gardens, particularly on dahhas and sunflowers, and is found on the 

 veld on small yellow composites ; the only remedy is to knock the 

 bugs from the plants into a can of water and paraffin oil, and this 

 should be done in the morning, when the insects are sluggish. The 

 fruit-fly [Ceraiitis capitata] has, on the whole, been less destructive 

 than in the previous year, but in February yellow peaches were badh^ 

 infested. The mite infesting tomatos has been the main cause of 

 failure of the summer crops ; while no remedy has been found for the 

 pest, the application of nicotine extract or very dilute lime-sulphur 



