June, 1920] PATHOLOGY 399 



2743. Royal Institute of Public Health. The bacteriological testing of disinfectants. 

 Jour. State Med., London, 27: 2. 1919. 



2744. RUTQSBB, A. A. L. Bastziekten in de F. M. S. [Bark diseases of Hevea brasiliensis 

 in the Federated Malay States.] Arch. Etubbercult. Nederland&che-Indie 2: 57 -50. 1018.— 

 Review <»f articles on stripe canker ami brown bast disease in the Malayan Tin and Rubber 

 Journal for August, September, and October, 1017. The brown bast disease of Hevea is defi- 

 nitely Identified by Rutgers with the condition which he described as "bruine binnenbaat" 

 in connection with canker phenomena. By H, C. Pkatt it is considered probable that tlie 

 disease is caused by Pkytopkthora. Bblgrave reported that no Phylaphlhara was found in 

 specimens of Hevea suffering from "brown bast" or "water-logged bark," or in burred trees, 

 but that a member of the Plasmidiophoraceae, apparently a new species of Spongotpota, was 

 present, and that there was little doubt that it was the cause of the disease, although inocu- 

 lation experiments had not been performed. — //. //. liartlell. 



2745. RUTGERS, A. A. L. Voorschriften voor de bestrijding van bastziekten bij Hevea 

 (uitgegeven door het Algemeen Proef station der Avros, October 1917). [Instructions for the 

 combating of bark diseases in Hevea.] Arch. Rubbercult. Nederlandsche-Indie 2:55-57. 

 1018. — Abstract in Dutch and English of a circular on the treatment of stripe canker (black 

 thread disease), patch canker, brown bast disease, ftnd burrs, issued by the General Experi- 

 mental Station of the A. V. R. O. S. to the members of the association of rubber planters of the 

 East Coast of Sumatra.—//. H . Barlletl. 



2746. Salmon, E. S., and H. Wormald. Potato spraying experiments at Wye College 

 Fruit Experiment Station, East Milling, Kent. Jour. Bd. Agric. Great Britain 26:71-77. 

 1 fig. 1010. — A series of field experiments was carried out in 1018 with "British Queen," a 

 second-early variety of potatoes to determine the value of spraying such a variety. One 

 application of Bordeaux or Burgundy mixture resulted in loss, owing to the spraying length- 

 ening the period of ripening while not protecting the crop from attacks of blight (Phyto- 

 phthora infestans). Under the same seasonal conditions, two sprayings with either Bor- 

 deaux or burgundy mixture resulted in an increase of 2.37 tons and 1.5 tons, respectively, of 

 sound tubers per acre. [See also next following Entry, 2747.] — M. B. McKay. 



2747. Salmon, E. S., and H. Wormald. Potato-spraying experiments at Wye College, 

 1918. Jour. Bd. Agric. Great Britain 26:260-278. 2 fig. 1010.— Tests were conducted to 

 compare the relative efficiency of two and three applications of Burgundy mixture on Great 

 Scot potatoes for controlling late blight (Phytophthora infeslans). Also plots were sprayed 

 with Bordeaux mixture and a new copper-containing mixture in which sodium silicate replaced 

 the washing soda. — The Burgundy and sodium-silicate-Bordeaux mixtures both produced 

 scorching which killed or injured many of the leaves so the fungicidal action was difficult to 

 judge. The best results were obtained on the plots sprayed three times with 1.4 per cent 

 Bordeaux mixture, which caused no scorching, the increase being at the ratf of 2 t.ons cwt. 

 per acre. [See also next preceding Entry, 2746.] — M. B. McKay. 



2748. Savage, William G. Disinfection: its place and application in public health work. 

 Jour. R. Sanit. Inst. London 39: 54-61. 1018. 



2740. Scalia. G. Sull' Ascochyta pisi Lib. [On Ascochyta pisi.] Staz. Sper. Agric. Ital. 

 51: 228-242. 8 pi., 8 fig. I018.-See Bot. Absts. 4, Entry 1158. 



2750. Schamberg, Jay F., John A. Kolmer, George W. Raiziss, with the assistance 

 op Mary E. Trist. Sodium oxy-mercury-ortho-nitro phenolate (mercurophen), with special 

 reference to its practical value as a disinfectant. Jour. Infect. Dis. 24: 547-582. 1010. — See 

 Bot. Absts. 3, Entry 830. 



BOTANICAL ABSTRACTS, VOL. Ill, NO. G 



