August 15, 1889. ] 
JOURNAL OF HORTTCULTURE AND COTTAGE GARDENER. 
141 
and rupture the central cells, thus causing the escape of the parent- 
cells of the antherozoids. From each of these is then discharged, by 
the bursing of its delicate cell-wall, an antherozoid consisting of a flat 
band of protoplasm coiled spirally three or four times, and bearing at 
its anterior end a number of fine cilia (fig. 20). To its posterior end is 
Fig. 20. 
Antheridof Adiantum CaplIlus-VenerisA. in different stages />. prothallium; (/, antherld; 
s, antherozoids ; b , vesicle with starch grains (x 60»). 
frequently attached for a time a vesicle containing starch grains, which 
is probably the remains of the special parent-cell of the antherozoid. 
As in other vascular Cryptogams, the body of the antherozoid appears to 
be formed from the nucleus of the mother-cell, the celia from the cell- 
protoplasm. 
“ The archegones are produced on the under side of the cushion of 
the prothallium, but in much smaller numbers than the antherids. Like 
them, each archegone is derived from a single superficial cell, which at 
first bulges only slightly, and is first divided into three cells by two 
tangential walls. The lowermost of these three, or basal cell, divides 
further, and takes its share in the formation of the venter, or swollen 
part of the archegone, which is altogether imbedded in the prothallium. 
The outermost of the three cells developes into the neck wall, or outer¬ 
most wall of the neck of the archegone, dividing at first into four cells, 
from which the four rows of cells which constitute the neck are formed 
by oblique septa. Since the neck grows more rapidly on the anterior 
side— i.e., the side nearest to the apex of the prothallium, and hence 
become convex on that side, the number of cells is also larger in the 
anterior rows of the neck, the usual number being six, while there are 
seldom more than four in the concave posterior side. From the middle 
one of the primary cells arises the whole of the axial row of cells of 
the archegone, consisting of the central cell and the canal cells. During 
Fig. 21. 
Archegone of Adiantnm Capil'us-Veneris, in various stage'. A li C. F.. 'n long'tudinal, 
b in transverse section ; h. neck ; si, canal-cells co iverted into mucilage ; s, ventral 
canal-cell; e, oosphere ; in E divided into a two-celled embryo l x sou). (After Goebel.) 
the development of the neck this middle cell becomes pointed upwards, 
and forces itself between the neck cells ; this pointed portion becomes 
divided off by a septum, and now forms the single neck canal cell, which 
lengthens as the neck lengthens. The large central cell now breaks 
up into an upper and smaller ventral canal cell and a much larger 
lower cell, the protoplasmic contents of which subsequently become 
rounded off, and constitute the oosphere. According to Campbell, the 
ventral canal cell is wanting in Struthiopteris germanica (L.). The 
walls of the canal cells swell up and become converted into mucilage, 
and finally this thin mucilage, together with the protoplasm of the 
canal cells, is expelled from the open neck. The antherozoids are re¬ 
tained by the mucilage, and collect in large numbers before the arche¬ 
gone ; a number of them force themselves into the canal of the neck, 
and of these some eventually reach the oosphere, and coalesce with it, 
entering it at a light coloured spot near the neck, which is termed the 
receptive spot. After impregnation the neck closes up. It is very rare 
for more than one archegone to be fertilised on the same prothallium, 
and the enormous majority of prothallia perish without producing any 
sporophyte generation.” 
The book is neatly and substantially bound, well printed on good 
paper, and creditable alike to authors and publisher. 
HORTICULTURAL SHOWS. 
ROM3EY. 
The annual Exhibition of the above Society took place in Broad- 
lands Park on Monday, August 5th, and was in every way a great; 
success. Many readers will remember that Shows were held by the 
same Society in the years 1880 and 1881, but through wet days and 
other causes were allowed tv die out. The Society has now made 
another successful start, and it is hoped will go on for many years. The 
Society is fortunate in having for its President the owner of Broadlands) 
the Hon. Evelyn Ashley, who places at the disposal of the Committee 
the beautiful park and pleasure grounds. The Society has also ah 
excellent Secretary in Mr. B. Chignell, who tries his utmost to make the 
Show a success. 
The principal prize in the schedule—that for twelve stove and green¬ 
house plants, distinct, six to be in bloom—was easily carried off by Mr.. 
Budd, gardener to F. G. Dalgetty, Esq., LocUerby Hall, Romsev, who 
had a very fine collection of plants, comprising large Stephanotis flori- 
bunda, Allamanda Hendersoni, A. grandifiora, Ixora Williamsi, Bougain¬ 
villea glabra, a very fine Croton Queen Victoria, C. paradoxa, Gleichenia 
Mendelli, Areca Verschaffelti, and a good plant of Alocasia Lowi. In 
the class for six stove and greenhouse plants, distinct, the same exhibitor 
was again first, having capital plants of Cyca? revoluta, Dasylirion corym- 
bosa, D. longifolia, Croton angustifolius, and Cassia corymbosa. Thera- 
were five groups put up tor the prizes offered, foremost among which 
was Mr. Budd, who showed a very tastefully arranged group, having for 
the back plants of Cocos Weddelliana, a groundwork of Maidenhair 
Fern, interspersed with well-coloured small Crotons, Tuberoses, Francoa 
ramosa, Cattleya Eldorado, C. crispa, &c. Mr. Osman, gardener to> 
Mrs. Strong, had a good group for the second prize. Mr. R. Wesf,. 
gardener to J. R. Wigram, Esq., Northl inds, Salisbury, was third. 
Mr. Evans, gardener to Lady Ashburton, Melchet Court, was the mosff 
successful with Coleus, Mrs. Strong and Mr. R. West taking the remain¬ 
ing prizes. Mr. R. West had the best Gloxinias and Achimenes, slew¬ 
ing well in each class. 
Fruit .—There were three collections of six dishes put up, all of 
which were good, there being a very close run for second and third places;. 
Mr. Budd had very good samples, which won for him the first prize. 
They were a handsome Queen Pine, beautiful colour, good Muscat of 
Alexandria and Black Hamburgh Grapes, Brown Turkey Figs, Violets 
Hative Nectarine, and Peaches. Mr. Fowler, gardener to the Hoh 3 . 
Evelyn Ashley, Broadlands, also staged a first class collection, including 
Muscat of Alexandria and Black Hamburgh Grapes, fine Dr. Hogg 
Peaches, and good Moor Park Apricots. Mr. Evans was third. Mr,. 
Fowler was the most successful with black Grapes, having fairly well 
finished Black Hamburghs, Mr. Budd being second ; and in the class for 
two bunches of white Grapes, Mr. Budd was first and Mr. Fowler second 
for Muscat of Alexandria. Mr. Fowler had the best dish of Peached) 
very fine fruits of Dr. Hogg, as also he was first for Nectarines and first 
for Apricots for a very good dish of Moor Park. Mr. Budd showed the 
best six dishes of hardy fruits, having in his collection Rivers’ Prolific 
Plum, Early Alexander Peaches, and Moor Park Apricots. Mr. West had 
the best stand of Roses, and also the best stand of twelve herbaceoub 
cut flowers, the latter being very go id. 
Vegetables were well shown, Mr. Evans being the most successful- 1 , 
having very fine Cauliflowers. Mr. West showed the best six dishes of 
Potatoes. Mr. Evans had the best brace of Cucumbers, and Mr. Fowler 
the best dish of Tomatoes. The Judges were Mr. Cox and Mr. C. 
Warden. 
STREATHAM. 
A Show was held in the Streatham Town Hall on August 7th and 
8th, and though the exhibits were not very numerous for such a good 
district, the quality was satisfactory in the leading classes. With 
keener competition the Exhibition might be greatly improved and 
extended. H. Tate, Esq., Park Hid, Streatham (gardener, Mr. W_ 
Howe), was the most successful, securing first prizes for six foliage 
plants, six Ferns, six plants in flower, a group of plants, a collection of 
vegetables, and six dishes of fruit. The chief feature of the Show wag 
formed by the groups in competition. Mr. Howe’s premier contribution 
was very tasteful, bright, and well finished, tall Palms at the back,, 
with Campanula pyramidalis (blue and white), Lilium auratum, ana 
Celosias rising from a bed of Ferns, well coloured Crotons, Fuchsias and 
