FEB.] THE HOT-HOUSE. 155 



But in case there are vines, or other plants, growing in the Hot- 

 house, this last operation must be omitted. 



If the above work cannot be clone in one and the same day, the 

 pine plants may with great safety be set in a dry airy place for a day 

 or two, pro\ 7 ided they are not put into heaps, which would greatly 

 damage them in a short time. 



The mould intended for the pine plants at the first potting, should 

 be light and fine : And I would recommend that the pots be small 

 in proportion to the size of the plants, that each plant may be what 

 Gardeners term UNDERPOTTED ; they will strike root both sooner 

 and better than if put into larger pots, and at their next shifting 

 they will go into proper-sized pots, with their balls and roots 

 entire. 



After the pine plants are replaced in the Hot-house, it will be 

 proper to shade the glasses in the middle of the day, whenever the 

 weather is warm and clear. The house should be constantly kept 

 to a great degree of heat, which will be the means of making the 

 plants strike sooner and stronger ; it being evident that they cannot 

 draw themselves weak while in an inactive state : However, as soon 

 as the plants are perceived to grow, it will be necessary to give them 

 by degrees a greater quantity of air. 



Great care should be taken to prevent the roots of the plants from 

 being injured by an over-heat of the tan, which may be done by 

 raising the pots, in case the tan should heat violently. 



Other Insects found in Hot-houses, ivith the methods of destroying 



them. 



Besides the different species of insects, which are found so perni- 

 cious to the Pine-apple plants, there are other kinds that infest most 

 stoves, which frequently prove very troublesome ; and although 

 they are not injurious to the Pine-apple, are yet very prejudicial to 

 most other plants kept there, either for use or ornament. 



1. THE APHIS. This insect is of the order HEMIPTERA. Charac- 

 ters. Rostrum bent inwards. Antenna, setaceous and longer than 

 the thorax. Wings, four on the males ; females none. Feet six. 

 They have generally two little horns or hairs, placed on the hinder 

 part of their abdomen. 



Roses, and various other plants, are very subject to be overrun 

 with these insects, and if no means are used to extirpate them, they 

 will in a short time, take such entire possession of the plants, that 

 every part of the young wood will appear to be covered with them. 

 They are commonly called lice. Many kinds of flowers and exotic 

 plants which are kept in stoves, are very subject to be annoyed with 

 them. 



These are easily destroyed three ways. 1. By fumigating the 

 house with tobacco. 2. By dusting the infected plants with fine 

 snuff or tobacco dust. 3. By a decoction or infusion of tobacco. 



2. THE ACARUS, commonly called the Red Sfiider. This isx>f 

 the order APT ERA. Characters. Eyes placed on the sides of the 



