of cows affected with tuberculosis, but with no discoverable lesion 

 of the udder. 



The Horticultural. 

 Investigations respecting the most economical w^ay of heating 

 green-houses, whether by steam or hot water, have been continued 

 with the same results in favor of hot-water heating as in previous 

 experiments, — a higher temperature being secured at a less con- 

 sumption of fuel. Report has been made on tests of thirty-eight 

 varieties of lettuce, twenty-four varieties of potatoes, ninety-seven 

 varieties of strawberries, nineteen varieties of the red raspberry, 

 fifteen of the black raspberry, sixteen varieties of blackberries 

 and forty-six varieties of tomatoes. Attention is called in the last 

 mentioned to the fact that varieties jyroducing most doable flowers 

 are most irregular in form and imper/ect in fruit. The impoi'- 

 tance of this to growers of choice fruit is apparent. By discarding 

 plants producing double blossoms, fruit in greater perfection will 

 be secured. Seed growers, too, by a more judicious selection of 

 plants can save waste and obtain a better strain of seed. Experi- 

 ments with the co-operation of Dr. Jabez Fisher of Fitchburg 

 have been carried on, in the girdling of grape vines, with the 

 results of an increase of sugar, a gain in size of the berry, and a 

 forwarding of the time of ripening by at least ten days. The 

 protection of fruit trees from the attacks of mice, rabbits and 

 woodchucks by the application of a mixture of lime, cement and 

 Paris green has had continued trial with the same favorable 

 results as reported in previous Bulletins. Tests have been made 

 of the value of varieties of seed of sweet corn grown in New Eng- 

 land as compared with the same varieties raised in the western 

 States. The Corey, Crosby and Stowell's Evergreen were the 

 varieties under trial, and a very decided increase of sugar in the 

 eastern grown over the western was found. Investigation has 

 been made of the cause of peach yellows, and of the yellows as 

 affected by special fertilizers, by condition of the soil and by its 

 surroundings. Special fertilizers for green-house crops have been 

 made the subject of experiment and have been applied to carna- 

 tions, lettuce, pansies and potatoes. The results summed up 

 show that of the nitrates, the nitrate of potash gave the best 



