PARK AND CCACTCRY. 
1 I 
pedmm spectabile, the largest species of this genus 
and by far the most beautiful of them all, the plant 
is about two feet high when well grown, leafy 
throughout, bearing one to several large pink, pur- 
ple and white flowers. Spirea filipendula flore ple- 
na, numerous corymbs of double white flowers and 
pretty fern like foliage, one of the best hardy per- 
ennials we have. Veronica rupestris , creeping hab- 
it, flowers showy blue in dense spikes, in May and 
June is a solid carpet of rich blue, it is an excel- 
lent plant. 
SHRUBS; — Clumps of the beautiful Berberis 
Thnnbergii. A species from Japan of small foliage, 
changing to a beautiful red in autumn; the habit 
is quite dwarf. 
VINES: — pAwny mails radicans, green. Euan- 
ymous radicans variegata. These two varieties are 
used in abundance, as they will cling to stone, just 
as the ivy does, is an evergreen, and do not winter- 
kill, we consider them very valuable. 
The undergrowth all through the Grotto is na- 
tive violets and Lily of the Valley which are very 
handsome early in the season. 
The trees are very largely Red Oaks of which 
there are some noble specimens, and a few other 
species and varieties. 
Very much more might be added to this descrip- 
tion of the Grotto, but enough has been said to sat- 
isfy the reader, that this is not only an attractive 
but very interesting spot, and if a diversion is per- 
missible the tact might be mentioned that while 
there is a large greenhouse plant, it is the intention 
of the Trustees to use in the prominent ornamental 
parts of the grounds all hardy plants, shrubs and 
evergreens, using the greenhouse to supply the or- 
ders of proprietors and in such ornamental places 
only where the surroundings will admit. It would 
be an injustice to thegardener, Mr. Westwood, were 
a mention not made of his interest in all the work 
pertaining to his department; and the fine appear- 
ance of the Grotto the last two seasons is due to 
the interest, care and skill he has bestowed upon it. 
Boston, Mass. Jahn G. Barker. 
Cemetery Greenhouses. — When, Where and How to 
Build. III. 
As plants must be taken into the houses in the 
fall in order to propagate and grow the stock for 
spring sales, it follows that the houses should be 
complete and ready for use by September ist. 
The durability of the houses depends largely upon 
the care which is given to every detail of the con- 
struction, and when time is short and the work 
must be hurried, it is likely to be slighted. The 
building should, then, if possible, be commenced 
early in the spring. The plans should all be work- 
ed out during the winter, and every detail complete 
and all material on the ground when the work is 
begun. 
The houses should not be so near the entrance 
as to be unsightly, and yet not too far away from 
the office. A level piece of ground, or one with a 
gentle slope to the south should be selected. For 
cut flower houses which are run east and west, a 
decided slope to the south is an advantage, but for 
the plant houses, with which we are at present con- 
cerned, as they run north and south, a steep slope 
is objectionable. If the ground is dry throughout 
the year, or so situated that a drain can be laid, 
allowing the boiler to be set in a pit considerably 
lower than the houses, so much the better. It is 
well to have the houses sheltered from west and 
north winds, but there should be nothing to shade 
them on the south, east and west. If a special 
house is built for propagating, it will be rather an 
advantage, than otherwise, to have it shaded, but 
the growing houses should have the full sun all day. 
All depressions in the site selected should be filled, 
all elevations cut away so as to leave the general 
surface smooth and either level or with a general 
slope of, perferably, not over i foot in lOO feet to 
the south. The grading should if possible be done 
in the fall, so that the filled places may become 
solid and firm by spring. The surrounding ground 
should be so graded or ditched as to carry all sur- 
face water away from the houses. 
The first thing to be considered in developing 
the plans is the form or style of the houses. There 
are two kinds of plant houses in common use; the 
lean to, of which an end view is shown in Fig. i; 
and the span roof, or even span house, as shown in 
Fig. 2. A third style, the three-quarter span, is 
sometimes used for this purpose, but it has no ad- 
