378 



APPENDIX I. 



the healthy plant. Both the healthy and the diseased clover 

 were produced from a mixture of seeds of red clover, lucerne, and 

 esparsette, such as is usually grown at Salzmunde, where the 

 experiments were made. The samples for examination and 

 analysis were taken from the field on August 12. The analysis of 

 the healthy plant was confined to the determination of the organic 

 substances and the amount of ash. 



100 parts of air-dried clover-hay contained, 



The composition of the ash of the diseased clover was com- 

 pared with that of the ash of red clover (Wolff) and esparsette 

 (Way).J The ashes were calculated after deduction of carbonic 

 acid, sand, clay, and sesquioxide of iron. 



Grouven is led to conclude from the result of his examination 

 that the primary cause of the clover disease is attributable to a 



* Substances convertible into sugar by sulphuric acid. 

 t With O'l of ash and 0'184 of protein substances. 

 \ Compare also the preceding analysis by Dr. Pincus. 



