COMMEKCIAL DUTCH-BULB CULTUEE. 49 



Marker. — A macliiue with a revolTing drum used to lay off the boundaries and 

 the rows of a bulb bed. 



Meter. — A unit of metric measurement, 39.37 inches. 



Mosaic. — A term used to designate any irregular distribution of coloring matter 

 in leaves and floral parts of the plants. 



Narcissus. — A low, herbaceous, perennial plant belonging to the amaryllis fam- 

 ily, having narrow radical leaves, flowers with a corona or trumpet, and the 

 outer coats dry and papery but not continuous, like that of the tulip. 



Narcissus fly. — Two species of flies are conspicuous in narcissus bulbs. The 

 large Merodon equestris is commonly known as the greater narcissus fly and 

 the small Eum^rus strigaUis as the lesser narcissus fly. The first is para- 

 sitic and the second is considered saprophytic. 



New disease. — The yellow disease of hyacinths caused by Bacillus hyacinthi. 



Old disease.^A nematode disease, especially of hyacinths. 



Packing material. — Buckwheat hulls, rice chaff, sawdust, etc., used in packing 

 bulbs. 



Parasite. — An organism which is able to attack and destroy live and healthy 

 plants. 



Parrots. — Tulips with cut or laciuiate floral parts. 



Path. — A narrow passageway of 12 to 16 inches between successive beds of 

 bulbs. 



Perianth. — The outer floral envelope of the flower. 



Plat. — As here used, a land bordered by a walk, road, or ditch, or all of them 

 combined, its width being the length of the bulb beds. 



Poets' Narcissus. — A group of the genus Narcissus having a pure white peri- 

 anth and variously colored short cro-\vns. 



Propagation. — The increasing of stocks of plants by any process. 



Eembrandts. — Broken Darwin tulips. 



Roguing. — The process of digging out and getting rid of undesirable plants or 

 plants out of place. 



Eoses. — ^Tulips of various shades of pink to rose in the breeder and broken 

 sections. They have a wlilte ground (tissue between the epidermal layers of 

 the petals). 



Bow. — A row in a Dutch bulb bed is a meter in length and extends across the 

 bed. The rows are usually about 6 inches apart. 



Saprophyte. — An organism which lives only on the dead tissues. 



Scooping. — A method of propagating hyacinths consisting of the scooping out 

 of the basal plate (stem) and exposing the scale edges to callousing and sub- 

 sequent budding, which results in the production of bulblets. 



Scoring. — A method x)t propagating hyacinths in which the basal plate is 

 hacked by three or four cuts through its diameter, for the same pui-pose as 

 scooping. 



Shak-er. — A machine designed to remove mechanically the loose dirt from bulbs. 



Sieves. — Sieves are of two kinds. The shaker has a sieve through which the 

 dirt passes and this is sometimes referred to as a sieve. The nesting cir- 

 cular parchment sizers are also often referred to as sieves. 



Single earlies. — Single-flowered early tulip varieties. 



Sizers. — These are machines employed for separating bulbs into different sizes. 

 The separation is accomplished by means of an oscillating screen, preferably 

 of parchment, perforated to allow the passage of objects of a definite circum- 

 ference measured in centimeters (cm.). A large oscillating plane made up in 



