750 EXPERIMENT STATION RECORD. 



The rot of chrysanthemum flowers, II. ('keimn {.Jour. Hoc. Nat. Jlort. France, 

 .'/. scr.. It {I!) 10), Jan., pp. 52-57). — The author divides the rot into 2 liinds, 

 heart rot or that which destroys the receptacle, due to nutrition disturbances, 

 and the rot of the ligules caused mainly by a funj^us, Botrytis cincrca. 



From extended experiments with various mixtures of fertilizers, tlie con- 

 clusion is reached that tbe heart rot is caused by the improper use^ fertilizers 

 in attempting to force the size of the heads. The compost, according to the 

 author, should have more lime and j)otash and less nitrogen than that in com- 

 mon use and sbould be prepared from 1 to 2 years prior to using. In this 

 case the plants at the time of flowering should have an extra quantity of nitro- 

 gen, preferably in the form of lime nitrogen. 



An entirely different treatment is recommended for the rot of the ligules, as 

 this is caused by the spores of the fungus falling on and infecting the flowers 

 during the blooming period when the atmosphere is humid. When convenient 

 the plants should be put under a closed shelter just before the buds open. If 

 the weather is damp, the buds should be sprinklcnl with a dilute solution of 

 nitric acid in the proportion of 2 gm. of cbemically i)ure nitric acid to a liter 

 of water, and vessels containing either quicklime, calcium chlorid, or hypo- 

 chlorite of lime, should be placed among the plants to absorb the moisture. If 

 the hypochlorite of lime is used, it will also give off oxidizing fumes, which 

 ai"e claimed to be injurious to the development of the fungus and yet not to 

 damage the flowers. If the fumes are too disagreeable, a milture can be used 

 consisting of common salt 1 kg., peroxid of manganese 200 gm., sulphate of iron 

 500 gm., nitrate of potash 500 gm., and powdered charcoal 1 kg., made into a 

 thick paste with water and gum arable and then molded into cones. These 

 when lighted will disengage oxidizing fumes, thus protecting the plants, 



ECONOMIC ZOOLOGY— ENTOMOLOGY. 



The zoological record, D. Sharp (ZooJ. Err., .',>, {1901). pp. XII +1521; 45 

 {1!)0S), pp. Xn+1395). — These volumes contain the usual classified bibliog- 

 raphies covering the literature relating to all branches of zoology. 



While the literature indexed in volume 44 is mainly that of 1907, entries 

 for 1901-1906 received too late for inclusion in the previous volume are included. 

 Similarly volume 45 indexes mainly literature issued during 1908, but in addi- 

 tion some entries for 1901-1907. 



The state crop pest law of Louisiana and rules and regulations of the 

 state crop pest commission, in effect November 1, 1909 (Crop Pc.st Com. 

 La. Virc. 32, pp. 223-2^0). — The regulations of the crop pest commission now 

 in force have been brought together in this cii'cnlnr. 



Third biennial report of the secretary for the years 1908—9, W. IS'ewell 

 {Crop Pest Com. La. Bicii. Rpt., 3 (1908-9), pp. A'A7I'),— A report of the work 

 of the year on the Argentine ant, boll weevil, San Jose scale, and other insect 

 pests. 



Nursery inspection in North Carolina, F, Siieuma-n, Jr, (Jniir. Ecoii. Eat., 

 2 (1909), No. 6, pp. 382-385).— This is a brief account of the work as conducted 

 in North Carolina. 



Insect enemies of cantaloups, cucumbers and related plants, R. I. SMrni 

 (North Carolina 8ta. Bui. 205, pp. S-'/O, Jiys. 18). — In this bulletin the important 

 insect enemies of cucurbits are described and many illusti'ated by means of 

 original photographs, summarized accounts being given of their life history 

 and habits, and of preventive and remedial measures. The pests thus consid- 

 ered include cutworms, the striped cucumber beetle, cucumber flea beetle 

 (Epitrix cucumeris), 12-spotted Diabrotica (D. 12-punctata) , squash lady 



