58 PATHOLOGY [Bot. Absts. 



B. dysenteriae. The organism may be isolated from dysenteric stools by filtration and cul- 

 tivation in the presence of B. dysenteriae. — [Abst. by G. H. S[mith] in Abst. Bact. 2, Entry 

 2058.] 



398. Doe, Fr. La conversion en futaie et l'oidium. [Conversion into high forest and the 

 oidium.] Rev. Eaux et Forets 57: 53-59. 1919.— See Bot. Absts. 3, Entry 2. 



399. Federal Horticultural Board, U. S. Dept. Agric. Amendment No. 1 to regu- 

 lations supplemental to notice of quarantine No. 37. Service and regulatory announcements 

 60: 21-22. 1919. Also U. S. Dept. Agric, Office of Secretary, Unnumbered leaflet, February, 

 1919. — Regulation 3 is amended so that bulbs, stocks, cuttings, seeds, etc., may be admitted 

 if packed in soil or sand which has been sterilized under supervision of a duly authorized 

 inspector. — D. Reddick. 



400. Federal Horticultural Board, U. S. Department of Agriculture. Amend- 

 ment No. 2 to regulations supplemental to notice of quarantine No. 37. Service and regula- 

 tory announcements 61:33. 1919. Also U. S. Dept. Agric, Office of Secretary, Unnum- 

 bered leaflet, March 27, 1919. — Regulation 14 is amended to read "Special permits for impor- 

 tation in limited quantities of prohibited stock." Safeguards are to be prescribed in the 

 permits as issued. This amendment is for the purpose of keeping the country supplied 

 with new varieties and necessary propagating stock. — D. Reddick. 



401. Federal Horticultural Board, U. S. Dept. Agric. Nursery stock, plant and 

 seed quarantine. Notice of quarantine No. 37, with regulations. Service and regulatory 

 announcements 57: 101-110. 1919. — This quarantine, effective June 1, 1919, supersedes 

 present regulations governing the importation of nursery stock and brings under restriction 

 all other plants or plant products for or capable of propagation. Such products as fruits, 

 vegetables and cereals intended for medicinal, food or manufacturing purposes and field, 

 vegetable and flower seeds are exempt. — Certain bulbs, rose stocks, fruit stocks, including 

 cuttings, scions and buds, and seeds of nut, fruit, forest, and other ornamental and shade trees 

 and of hardy perennial ornamental shrubs may be imported under permit, the terms of which 

 are as follows: they must be free from sand, soil, or earth and they must originate in coun- 

 tries which maintain inspection. The U. S. Department of Agriculture may import any 

 plant or plant product for experimental or scientific purposes. — D. Reddick. 



402. Hutt, Harry. Dry rot from the architect's point of view. Jour. Bd. Agric. Lon- 

 don 25: 166-176. 3 fig. 1918. — This article does not attempt to deal with the various forms 

 of fungi which cause dry rot in timber. Investigations were made showing that in the 

 majority of cases where dry rot was found, the work had been carried on without the super- 

 vision of an architect. In order to decrease the loss due to this disease the author suggests 

 that all workmen should receive special instruction on the conditions conducive to the pro- 

 duction of dry rot, and methods of construction that should be used to prevent it. Condi- 

 tions favorable for growth of the fungus, and measures of control are given. The instructions 

 given are mainly the sanitary measures employed for the control of fungus diseases. — 

 J. Norma Anderson. 



403. Johnson, James, and R. H. Milton. Strains of White Burley tobacco resistant to 

 root-rot. U. S. Dept. Agric. Bull 765. 11 p., fig. 1-4-. 1919. — The purpose of the bulletin 

 is to show the incorrectness of the commonly accepted explanations of tobacco "exhausted" 

 soils in the Burley section of Kentucky and adjoining states. Root-rot (caused by Thielavia 

 basicola) is an important factor in determining systems of tobacco soil management. It is 

 one of the causes of yellowing and improper growth in seed beds. Low temperatures (60° to 

 75°F.) favor, while high soil temperatures (80° to 100°F.) practically prevent development 

 of the parasite. Thus, in relatively warm seasons diseased plants may partially or wholly 

 recover. In the Burley region rotation is practiced yet "sick" soils obtain; "healthy" soils 

 are first contaminated by the transfer of the fungus bv wind, water or animals. In order to 



