A 



442 



Toluene and carbon bisulphide are unreliable. Although liquid 

 carbolic acid was not nearly so effective as steam, it has proved the 

 most convenient of all the chemical substances for use on a large scale. 



In laboratory experiments its effectiveness against eelworms and 

 fimgi is improved by introducing chlorine atoms. 



The method of using cresylic acid is to add 1 gal. of the acid to 40 

 gals, of water and apply the mixture to 9 to 18 sq. yds., followed by 

 heavy watering. In the case of heavy soil the acid is applied in two 

 doses at an interval of 14 days, the land having been previously dug 

 over to a depth of 1 spit. Planting can begin at the end of one month. 

 Good results can be obtained with half the dose. 



Morrill (A. W.). Entomology. — Arizona Univ. Agric. Expt. Sta., 

 29th Ann. Rept. Year ended 30th June 1918, Tucson. 31st December 

 1918, pp. 335-338. [Eeceived 10th August 1920.] 



The bulk of the information given in this report, which deals largely 

 with grasshoppers, has been noticed elsewhere [R.A.E.. A, vi, 304; 

 vii, 204]. 



Work Connected with Insect and Fungus Pests and their Control. — 



Rept. Agric. Dept.. St. Kitts-Nevis. 1918-19; Barbados. 1920, 

 pp. 13-14 & 27-28. 



Considerable damage was done to cotton by the cotton worm, 

 Alabama argillacea, during the year under review. Cotton- stainers 

 [Dysdercus] were also very abmidant, especially during November and 

 December 1918. On 28th September 1918 an ordinance was passed 

 making provision for the eradication of this pest. Two inspectors have 

 been appointed to assist in carrying on the campaign, which includes 

 destruction of the cotton-stainers wherever found, destruction of the 

 native food-plants, and thorough cleaning up of old cotton seed around 

 ginneries and other places. 



Leaf blister mite [Eriophyes gassy pii] was not very prevalent during 

 the year. 



Moth borers were in evidence on sugar-cane, but their abundance was 

 probably due to drought. 



Froggatt (W. W.). Notes on Australian Sawflies. (Tenthredinidae). 

 — Proc. Linn. Soc. N.S.W., Sydney, xhii, pt. 3, 18th December 

 1918, pp. 668-672. 



The species dealt with include : Perga dorsalis, Leach (steel-blue 

 sawfly), the larvae of which feed at night on the leaves of gum trees 

 {Eucalyptus). Pupation generally occurs in the soft soil against the 

 tree-trimk about April. From pupae taken in April, adults emerged 

 in the insectarium in the early part of October. The adults of Ptery- 

 gophorus bifasciatus, Brulle, emerged in September from pupae found 

 embedded in soft wood of the stem of an undetermined tree. Philo- 

 mastix macleayi, Westw., was found on wild raspberry plants on the 

 Tweed River, New South Wales. A number of cases are recorded of 

 cattle dying as a result of feeding on the larvae of Pterygophorus analis, 

 G. Costa. The eggs are laid in the early summer on the foliage of 

 the ironbark tree. The larvae completely strip the foliage of the 



