1889. J BOTANICAL GAZETTE. ,}< > 



mixture, containing from six to eight pounds of copper sul- 

 phate and from four to six pounds of lime, is the most reliable 

 remedy. The ammoniacal carbonate of copper solution, how- 

 ever, promises to be fully as valuable as the last. It. more- 

 over, is cheaper and can be applied with any ordinary noz- 

 zle. Down}- mildew can easily be controlled by any ot the 

 copper remedies, the ammoniacal solution being the best un- 

 der all circumstances. The experiments showed that anthrac- 

 nose will develop despite the application of copper remedies. 

 Powdery mildew of the apple has been treated with excellent 

 results, the preparation used for this purpose being the am- 

 moniacal carbonate solution. This experiment was carried 



on under Prof. Gallowav's own supervision at nurseries near 

 Baltimore, 300,000 apple seedlings being treated. _ Treatment 

 of pear leaf-blight (Entomosporium) was made in the same 

 nurseries, also in New Jersey, the results being highly satis- 

 factory. The experiments in the treatment ot apple scab 

 were conducted bv Professors Goff, of Wisconsin, and Tatt. 

 of Michigan. Earlv in the spring a plan of the work was 

 drawn up and sent to both these men. Both carried on prac- 

 tically the same, but entirely independent, experiments, and 

 both arrived at the same results, namely, that the scab could 

 be controlled bv any of the fungicides used ; but all things 

 considered the ammoniacal carbonate of copper solution w 



the cheapest, most practical and etlicacious 

 Otl .-..-■ -1 — - 



latenes 



ler botanists spoke of their work very briefly, but th 



- 3s of the hour made it necessary to bring the exercises 



to a summary close. It was voted that during the comin 

 year a station botanists' bulletin be prepared, in which eacn 

 botanist should outline the work already done or in progress 



and thus facilitate cooperation whenever it is desired, rio- 

 fessors Halsted, Scribner and Galloway were made such a 

 committee, after which the Botanical Comm.ttee of the Asso- 

 ciation of American Agricultural Colleges and 1 Experiment 

 Stations (a long name, by the way), with Protessor b. M. 



Tracy in the chair, adjourned. rT c ,. „, 



Byron D. Halsted, Secretary. 



