376 Retrospective Criticism. 



and from Mi-. Anderson of the Chelsea garden, Mr, Knight, Messrs. Lod- 

 diges, Mr, Cree, Mr. Maund of Bromsgrove, Mi-, Pope of Handsworth 

 near Birnnngham, and, above all, from Messrs, Young of Epsom, we have 

 nearly completed the Dicotyledonovis division of our herbaceous repre- 

 sentative system. The Monocotyledonous division consists chiefly of 

 carexes, grasses, and bulbs ; most of the bulbs were already in our posses- 

 sion ; the grasses, as we have above mentioned, have been furnished by 

 Mr. Aiton ; and some of the cai-exes by the Misses Perry. 



Of the garden Acotyledoneae, those ferns and mosses which we had not 

 got, were supplied bv the Misses Perry of Stroud House, 



We are still in want of plants to illustrate the following orders and 

 tribes: viz. — 



Hot-house Plants. Vasculares: Order 2, tribe 1; 17, tribes 1, S, 3; 20, tribe 3; 30, tribe 6; 

 S3: 34, tribes 1, 3, 4 ; 38, tribe 1; 40, suborder 1; 41, Hipp, spuriee ; 42; 46; 55, tribe 3 ; 

 5fi ; 64 ; 65 ; 66, tribes 3, 7 ; 67, tribes 6, 7, 9 ; 71 ; 73 ; 74 ; 75 ; 81, tribe 1 ; 82 ; 86, tribe 1 ; 

 107; 132; 133; 159; 16.i ; 169; 186; 198, 204, section 3. Cellvlares : Order 1, tribe 5. 



Green-house Plants. J'asculares : Order 2, tribe 2 ; 3, tribe 1 ; 5, tribe 2 ; S ; 16, tribe 2 ; 23 ; 

 SO, tribe 3; 34, tribe 2 ; 36; 38, suborder 2 ; 55, sections 2, 4 ; 66, tribe 6; 76, tribe 6 ; 95; 98, 

 subtribe2 of tribe 1 ; 103, sections 4, 6; 104; 118; 131; 135; 14i; 162; 168; 207; 210, sub- 

 order 4. 



- Hardy Herbaceous Plants. Vasculares : Order 10; 13, tribes 4, 6, 6, 8,' 11, 13, 14, 15, 19, 20, 

 21 ; 47, subtribe 3 of tribe 3 ; 76, tribe 4 ; 77, tribe 1 ; 78 ; 81, tribe 2 ; 86, tribe 2 ; 88 ; 90, tribes 4, 

 5 ■ 91, tribe 2 ; 108, tribe 7, suborder 2 ; 115, sections 2, 3 ; 146 ; 154 ; 172 ; 183, tribes 2, 7, 8 ; 

 188; 189; 192; 193; 199; 208. Cellulares : Order 1, tribes 3, 4; 4. 



Our friends will find the names of the orders and tribes referring to these numbers at p. 157 

 -175. 



Art. V. Retrospective Criticism. 



Spa Botanic Gardens. — Sir,I was surprised to find in your last Number 

 (p. 220.) so gross a misrepresentation of the Southampton Botanic Garden, 

 which is under my immediate charge, I am persuaded your numerous sub- 

 scribers will at once perceive the base motive of the individual who took 

 upon himself to decry and nickname a place so well known to botanists 

 and amateurs. As I scorn the idea of puffing, I shall not enter into any 

 detail at present, further than the extent of ground and glass. If you con- 

 sider it of the slightest moment, I will undertake to transmit you an im- 

 partial description of Mr, Page's establishment, which I am proud to have 

 the honour of conducting. Our ground in the town of Southampton, in the 

 whole, is about 1 acre, and 764 ft. of glass ; and our nursery, which is five 

 minutes' walk from our own ground, contains S-t acres, and 100 ft. of glass. 

 Yours, &c. — James Ingram. Sout/iampton Botanic Garden, April 25. 1831. 



We shall be most happy to receive the description offered. We were 

 quite unaware of any misrepresentation in the article alluded to, relying on 

 the writer's name as a guarantee for truth and good feeling. — Cond. 



Mr. Fowler of Devons/i ire's Mode oflieating by liot Water. — Sir, In 30ur 

 Magazine for August, 1829, you were pleased to notice a pamphlet I had 

 published on the subject of a patent granted to me for circulating hot fluids 

 for agricultural and various other purposes. The introductory remarks you 

 have made did me the greatest honour ; and I felt grateful, indeed, to you 

 for them, as they were so much calculated to establish my original claim to 

 the invention — an invention which originated entu-ely from contemplating 

 the cause of circulation of hot water, as described in some of the earlier 

 Numbers of the Magazine for 1827. At that time, many theories were 

 existing as to the cause of this curious mode of conveying heat ; but none 

 appearing satisfactory to the gentry here in Torrington, I was asked if I 

 could account for the cause of circulation. After some consideration, I 

 saw that the levity of hot water, or rather the difference of density of 

 hot and cold water, was the entire cause ; and I thus satisfactorily ex- 

 plained it. Contemplating further on the expansion of fluids by heat, 



