652 EXPERIMENT STATION RECORD. 



furnish conditions for the development of bacteriosis, the use of a sharp knife in 

 topping is recommended. The first top should be taken out when the stem is in 

 danger of toppling over and growing into a crooked plant, the second when the 

 branch is forming a bud at the end. Late-blooming carnations should be topped 

 very sparingly, so that the plant can be taken in with shoots long enough to produce 

 some early flowers. Early bloomers require more constant attention and should not 

 be carried into the house with buds on, since such buds make only third-rate flowers. 

 Continuous bloomers should be handled the same as the foregoing, according to their 

 habit of earliness or lateness. Carnations that bloom in crops require especial atten- 

 tion to topping in order that they may be made to bloom at the season when they 

 are most wanted. " Quick comers" should be topped once or twice in the house in 

 order to get the crop to come up between December 15 and January 10 and a second 

 crop at Easter time. 



Benching carnations, C. W. Ward, L. E. Marquisee, and J. Hartshorne 

 {Amer. Florist, 16 [1901), No. 686, pp. 1781-1783) .—The best course to pursue in 

 benching carnations, as regards date of planting indoors, proper compost, details 

 of the operation of moving the plants from the field, etc., are considered independ- 

 ently by each of the authors. 



The influence of incandescent lig'hts on carnation culture ( Florida Agr. , 28 

 {1901), No. 1436, J). 503). — It is stated that in experiments conducted at the Michi- 

 gan Agricultural College incandescent lights in the greenhouse had the effect of 

 increasing the length of the stem and the size and quantity of the flowers. 



Carnation hybrids, Amelung [Gartenflora, 50 {1901), No. 17, pp. 449, 450). — 

 Brief notes and a colored plate are given showing the result of the artificial crossing 

 of DiavthuH chinensis as mother plant D. caryophyllus as pollen plant. The details of 

 this work were noted in an earlier number (E. S. R., 12, p. 752). 



Recent chrysanthemum literature, C. H. Payne ( Gard. Chron., 3. ser.,30 {1901), 

 No. 765, p. 145). — The publications on chrysanthemums since 1897 are briefly noted. 



Cineraria stellata {Amer. Florist, 17 {1901), No. 690, pp. 133, iJ^).— Notes on the 

 origin of this flower and on methods of culture. 



Horticultural monograph of the lilacs, L. Henry {Jour. Soc. Nat. Hort. France, 

 4. ser., 2 {1901), July, pp. 726-759). — The various species of the genus Syringa and of 

 the subgenus Ligustrina are monographed. 



Newer lilies, J. G. Baker {Amer. Gard., 22 {1901), No. 350, pp. 620, 621).— This 

 is a summary of a paper presented by the author at the London lily conference, in 

 which a number of the newer lilies are briefly noted as to species and character of 

 flowers. 



Hybrid stock for grafting roses {Amer. Gard., 22 {1901), No. 339, p. 440).— 

 The writer considers Manetti stocks, which are so largely used in growing roses, not 

 at all suited to our climate. Where perfect hardiness is required the Avriter has sub- 

 stituted Michigan or Prairie rose {Rosa setigera), R. ivichuraiana, and sweetbrier {R. 

 rubiginosa) for INIanetti stocks with good satisfaction. "All make good, deep roots, 

 and are little affected by dry weather when established, and are not at all disposed 

 to sucker." The best of all stocks, however, has been obtained by crossing Crimson 

 Rambler with Clothilde Soupert, both of which are varieties of R. viuliiforn. 

 These stocks are extraordinarily vigorous, show no inclination to throw up sprouts, 

 and for budding purposes the stocks are easily worked. " In hardiness it seems little 

 inferior to the native species. " The roots are easily grafted with the splice graft. 

 The stems are not so satisfactory for grafting. For tree-rose effects the writer pre- 

 fers to bud high up on strong sweetbrier shoots and trim off all other shoots and 

 branches from the stock as soon as the bud has formed a fair top. 



Horticultural monograph on roses, J. Gerome {Jour. tSoc. Nat. Hort. France, 4- 

 .see., 2 [1901), July, pp. 760-762. — A botanical and horticultural study of genus. 



Tecomas, H. Nehrling {Amer. Gard., 22 {1901), No. 351, pp. 634, 635).— Ten 

 species of Tecoma are described. 



