352 EXPERIMENT STATION RECORD. [Vol.38 



article ubove noted, the author states that in tests by Robson at Montserrat 

 and Harhind at St. Vincent, also by himself with material forwarded from both 

 of these places, the disease was found to be due to the specific fungus mentioned 

 in the article above noted. The facts indicate with apparent certainty the 

 agency (as carriers) of plant-feeding green bugs {Nezara viridula). The fun- 

 gus, which resembles closely Eremothecium cymbalartce and has considerable 

 scientific interest owing to its methods of spore formation, has now been found 

 in material from Tortola, St. Kitts, Montserrat, St. Vincent, and Barbados. 

 It occurs in nearly all the bolls examined, but in a small proportion is replaced 

 by bacteria. 



The fungi of internal boll disease, W. Noweix {West Indian Bui., 16 {1911), 

 No. 2, pp. 152-159, figs. 4). — The author here presents what is regarded as a 

 preliminary outline of observations made on certain fungi, including one species 

 closely resembling that described by Schneider (E. S. R., 36, p. 749), which 

 occurs in green cotton bolls in the West Indies. 



The fungus forms are four in number and are connected by certain features 

 which strongly suggest a close interrelationship. It is thought that the facts 

 here noted may prove to be of considerable importance in future discussions 

 of the taxonomy of the simpler fungi. 



It is regarded as proved that the gross staining of lint in unopened bolls 

 (often followed by more or less rotting of the boll contents), which constitutes 

 this disease, is due to infection resulting from the puncturing of the wall of 

 the boll by plant bugs, mainly Nezara viridula and Dysdercus spp. The infect- 

 ing organism is, in most cases, one of the four fungi referred to above, though 

 a portion of the infections can be ascribed to bacteria. The proportion of such 

 bacterial infections, though ordinarily small, increases greatly in wet weather. 

 Infections by the fungi may occur, apparently, at any developmental stage 

 after the establishment of the boll, the effect varying accordingly in ways which 

 are described. 



Blight disease of potatoes, B. F. Lutman {Ann. Rpt. Vt. State Hort. Soc, 13 

 {1916), pp. 55-60, pi. 1). — This is a discussion of the development of late blight 

 of potato as it occurs in Vermont, the contributing causes, and the outlook for 

 the near future in that State, with recommendations for its control. These 

 include avoidance of diseased tubers for use as seed and spraying with Bor- 

 deaux mixture, beginning about the first week in July and continuing as found 

 necessary. 



Sugar cane diseases, R. Averna SaccA {Bol. Agr. [Sao Paulo], 17. ser.. No. 

 12 {1916), pp. 936-938). — Further mention is made of some diseases of sugar 

 cane, as noted previously (E. S. R., 37, p. 553), along with a discussion of a 

 mild injury due to Capnodium sp. on the stalks in damp situations, and of a 

 severe injury due to a Tylenchus showing analogies to T. acutocaudatus, 

 together with remedial measures suggested. 



Bitter pit investigation. The cause and control of bitter pit, with the re- 

 sults of experimental investigation, D. McAlpine {Rpt. Bitter Pit Invest. 

 [Aust.}, 5 {1915-16), pp. lU, pis. 38).— This, the fifth report on bitter pit 

 (E. S. R., 87, p. 455), deals in some detail with yield in relation to bitter pit; 

 crinkle, a confluent form of the trouble ; diseases superficially resembling bitter 

 pit ; the fruit buds of the apple tree ; pruning experiments ; the effects of ring- 

 ing and constricting the branches of apple and pear ; experiments conducted un- 

 der natural conditions with a view to controlling the trouble ; the cause of bitter 

 pit ; and its control as regards orchard practice, storing, and shipping. It is 

 now considered possible to ship fruit oversea without risk of overripening, and 

 bitter pit may also be considerably reduced. 



