BAIRD &TATLOCK (LONDON) LTD. 



GRAMINEAE. 



4607 T A vena sativa. Spikelet of oat. X 30 .. .. .. .. .. .. 176 



Can be taken to pieces. 



4608 T Hordeum distichum. Spike of barley. X3O.. .. .. ..150 



The covering bract of the spikelet in the middle can be removed. The ovary of its flower can be lifted out 

 together with two stamens. One of the lateral spikelets is given in vertical section. 



4609 T Poa pratensis. Meadow-grass. Spikelet. x 40 . . .. .. .. .. 15 6 



The first flower of the spikelet is divided into two halves, one of which can be lifted out. 



4610 



4610* Secale cereale. Rye. Spikelet. x 30 . . . . . . . . . . . . 150 



The right half of the spikelet can be removed and taken to pieces. 



4611 Section of the spikelet. x 25 .. .. .. .. .. . . 13 



4612 T Germination. Longitudinal and cross sections of the lower part of the fruit at the beginning 



of germination, with the young plant . . . . . . . . . . . . 0156 



4613* Fruit of rye (grain). X 60 . . . . . . . . . . . . ..2140 



After removal of the small fork of wire the model divides into two longitudinal halves, which show the aleuron- 

 layer and the endosperm cells stuffed with starch grains. The removable embryo (also longitudinally cut) shows the 

 extremely tender cells of the scutellum, of the calyptra and coleorhiza. The model is accompanied by a trans- 

 parent longitudinal section representing the microscopical structure of the embryo. Two removable parts of the 

 seed, adjacent to the external wrinkled testa of the fruit, represent the extremely hard and the pigment-tissue. 



4614 1 Triticum vulgare. Common wheat. Spikelet. X 30 . . . . . . . . 1 14 



The central parts can be lifted out and taken apart. 



461 5 1 Section of the spikelet. x 25 . . .. .. .. .. . . 13 



ICHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS 



837 



